Pro-grade C7 LED Christmas light bulbs — used by pro installers on rooflines (especially smaller homes), Christmas trees, porches, columns, indoor displays, and accent runs. Same pro-grade construction as C9 (polycarbonate faceted lens, dimmable SMD LED) but with a smaller bulb and E12 candelabra base — and a sparklier, more concentrated visual effect because the same light comes from a smaller surface.
E12 candelabra basePolycarbonate faceted lensDimmable SMD LED120V AC · 0.8WUL Listed indoor/outdoorFree shipping over $349
C7 or C9? Pick the right bulb in 30 seconds
C7 and C9 are the two pro Christmas light bulb sizes. Same install style (screw bulbs into stringer wire, mount with clips), different bases, different brightness profile, different best-fit use cases. Use this table to match the right bulb to your job.
Spec
C7 LED YOU ARE HERE
C9 LED
Bulb size
~2.125" tall × ~7/8" wide
~2.875" tall × ~1.1875" wide
Base
E12 candelabra
E17 intermediate
Lens
Polycarbonate, faceted
Polycarbonate, faceted
Total lumen output
40–80 lumens per bulb
80–120 lumens per bulb (more chips fit in the larger casing)
Visual character
Sparklier, more concentrated — higher luminance density (lumens per sq in)
Bolder, more visible from long distance — more total lumens
Brands in stock
Minleon V2 (Tuff C7 coming soon)
Tuff Bulbs, Minleon V2 (Opti-Core coming soon)
Best for
Rooflines on smaller homes, Christmas trees (24"–36" spacing), porches, columns, indoor garland/wreaths
Rooflines on medium-to-large homes, commercial buildings (street-visible at 100+ ft)
Spacing on stringer
12" (linear runs) · 24"–36" (trees)
12" (standard) · 15" (sparse)
Most contractors use BOTH — C9 for the main roofline on larger homes, C7 for smaller homes, trees, porches, and accent runs.
Jump to C7 bulbs in stock → · View C9 bulbs →
What are C7 LED Christmas light bulbs and where are they used? C7 LED bulbs are the smaller of the two pro Christmas light bulb sizes — approximately 2.125 inches tall × 7/8 inch wide, with an E12 candelabra base. Pro installers use C7 on residential rooflines (especially smaller homes), porches, columns (linear runs only, not wraps), door outlines, indoor garland/wreath installs, and ornamental Christmas trees (the cone-form display trees that ship without lights). C7 is NOT the right pick for branch-wrapping real outdoor trees or for column wraps — the small bulb gets lost on those surfaces. Total lumen output is lower than C9 (40–80 vs 80–120 lumens), but C7 has higher luminance density — the same light packed into a smaller bulb creates a sparklier, more concentrated look. Christmas Lights HQ stocks Minleon V2 C7 LED bulbs at 120V AC, 0.8W per bulb, UL Listed indoor/outdoor. Same-day ship before 2 PM ET. Free shipping over $349.
Pro Christmas light contractor — scaled from $0 to $1M+ in install revenue. Read Jason's full bio →
Last updated
C7 is not just an accent bulb
Hi, I'm Jason Geiman. I scaled my install business from $0 to $1M+ before launching Christmas Lights HQ. The conventional wisdom says "C9 is for rooflines and C7 is for accents." That's only half right. Plenty of pro contractors run C7 on rooflines too — especially on smaller homes, and on the ornamental Christmas trees out front. C7 actually looks brighter at close-to-mid range because the same light comes from a smaller bulb (higher luminance density). Homeowners standing in their front yard often prefer the sparklier C7 look.
Most multi-crew operators stock C9 by the case for big rooflines AND C7 for smaller homes, porches, and ornamental trees. Message me before ordering if you want help sizing C7 quantity for your jobs.
Why pro-grade C7 LED bulbs matter
C7 looks small, but it's commercial-grade construction at a smaller scale. The difference between a $0.25 hardware-store C7 and a pro-grade C7 is what happens after season one.
1
Polycarbonate lens, not acrylic
Polycarbonate is 200× stronger than glass and 30× stronger than acrylic. Pro-grade C7 LED bulbs survive subzero temperatures, UV exposure, and the truck-bed test. Cheap acrylic yellows after one season in storage and cracks below 20°F.
2
Nickel-plated E12 base
Pro C7 bulbs use nickel-plated E12 candelabra bases. Solid electrical contact in wet, cold, and coastal climates. Aluminum and tin bases corrode by year two — exactly when you get the 9 PM Tuesday call about a dark accent run.
3
Higher luminance density than C9
C7 bulbs put roughly the same lumens per chip into a smaller bulb surface. The result: a sparklier, more concentrated visual effect at close-to-mid range. Homeowners standing within 30 feet often perceive C7 as visually brighter than C9 even though C9 has higher total lumen output.
4
E12 = universal C7 stringer compatibility
Every pro C7 stringer wire uses the E12 candelabra socket — same as standard household nightlight sockets. Our C7 bulbs fit any existing C7 stringer wire from any manufacturer. No adapters, no surprises.
How to install C7 LED Christmas light bulbs (5 steps)
Real install workflow for rooflines, ornamental Christmas trees, porches, and door outlines. Spacing varies by application: 12" for linear runs (rooflines, porches, doors) · 12-15" for ornamental Christmas trees.
1
Pick the spacing for your install type, then measure
For roofline, porch, column (linear, not wrapped), and door outlines: 12-inch spacing (1 bulb per foot). For ornamental Christmas trees: 12-inch or 15-inch spacing wrapped around the cone form factor of the tree. Then measure the install footage. A 50-foot porch at 12" = 50 bulbs. A typical 6-ft ornamental tree wrapped at 15" spacing = ~30-40 bulbs depending on cone diameter.
Tools: Tape measure, calculator, notepad
2
Lay out the C7 stringer wire
C7 stringer uses E12 sockets at your chosen spacing. Confirm wire spacing matches the application (12" linear for rooflines/porches/doors, 12-15" for ornamental Christmas trees). Roll out on the ground beside the install path before mounting.
Tools: C7 stringer wire (E12 sockets, 12" or 15" spacing)
3
Screw the C7 LED bulbs into each socket
Hand-tight only. Over-tightening cracks the E12 base, not the bulb — the candelabra base is the weak point on a C7, not the polycarbonate lens. Confirm every bulb lights by plugging in the stringer BEFORE mounting. Pro tip for ornamental trees: swap every 4th or 5th bulb on the stringer for a twinkle bulb — the random flash effect makes the whole tree look animated from the street. Champagne-look variant: alternate Warm White and Pure White bulbs every other socket — the two-tone effect gives the run a shimmering "champagne" appearance, especially nice on porches at close-to-mid viewing distance.
For rooflines: shingle tabs or gutter clips. For porches: small clips or zip ties to railing/post. For door outlines: adhesive clips that don't damage paint. For ornamental Christmas trees: wrap the cone form factor of the tree from base to top in a spiral, using zip ties or branch-friendly anchors where the stringer needs to stay put. We do NOT recommend C7 for column wraps or for branch-wrapping real outdoor trees — the bulb gets visually lost on those surfaces and the install looks unfinished.
A finished C7 install on an ornamental Christmas tree, base wrapped at 15-inch spacing — survives the snow without yellowing.
Tools: Clips appropriate to surface (shingle, gutter, adhesive, zip ties for ornamental trees)
5
Connect power, terminate ends, verify
Plug the male end into a GFCI outlet or timer. Cap the female end with a wire termination cap. Verify the run lights up evenly. Pro tip: For indoor installs (garland, wreaths, mantel), use a timer with a 4–6 hour daily cycle to extend bulb life. For outdoor ornamental trees, use a photocell + timer combo so the lights only run after dusk.
Tools: Wire termination caps, GFCI outlet or timer (photocell + timer for trees)
If you only buy ONE thing on this page
The Minleon V2 C7 LED bulb — the residential porch and tree-wrap default. Smaller footprint than C9 with the same Minleon engineering: thicker shell, TRIAC-dimmable, IP65 waterproof. Match Kelvin to your C9 roofline for a coordinated property look. Shop Minleon V2 C7 →
In stock: Minleon V2 C7
Christmas Lights HQ currently stocks the Minleon V2 C7 (0.8W, E12 base, IP65, TRIAC-dimmable, polycarbonate lens, cETLus listed) as the in-catalog C7 LED. Tuff Bulbs C7 and additional commercial-grade brands joining the lineup as inventory grows.
Minleon V2 C7 — The industry-standard commercial C7 LED
Multi-faceted polycarbonate housing. Nickel-plated E12 candelabra base. SMD LED technology. 120V AC, 0.8W per bulb. Dimmable on TRIAC dimmers rated for LED loads. UL Listed indoor/outdoor. Manufacturer: Minleon — since 2005. Patents US 10738984 / 10094568 / 10047928 / 10415815.
Color range: Sun Warm White (2600–2950K), Warm White, Pure White, plus accent colors (Red, Green, Blue, Multi-Color, and more).
Pack: 25-pack.
Pro take: Same Minleon V2 SMD platform you trust on the C9 roofline, just sized for smaller homes, ornamental Christmas trees, porches, and door outlines. If you already run Minleon V2 C9, the V2 C7 matches the color temperature and visual style — no mismatch between the roofline and the accent runs.
More C7 brands coming soon
Tuff Bulbs C7 (the C7 sister to the popular Tuff C9) and additional commercial-grade C7 brands are in the pipeline. Join the Pro Pricing list for first-look pricing and early access.
See pro-grade C7 LED bulbs in action
Watch a real install — Minleon V2 C7 on a residential roofline, ornamental Christmas tree, and porch.
Filmed on a 1,800 sq ft single-story residential roofline + 6-ft ornamental Christmas tree + 40-foot porch. Minleon V2 C7 Sun Warm White at 12-inch (linear) and 15-inch (tree) spacing.
Color temperature (Kelvin) for C7 installs
C7 follows the same Kelvin logic as C9. The single most important rule: match the C7 Kelvin to the C9 Kelvin on the same property. If your roofline is Warm White (3000K — the bestseller), your ornamental Christmas trees and porches should be too — visual consistency from the street.
Sun Warm White (2600–2950K)
The "old incandescent" throwback — pair with C9 Sun Warm on the roof
Sun Warm White (2600K) looks exactly like the traditional incandescent bulbs from older Christmas lights — deep amber, golden, nostalgic. Slightly dimmer perceived brightness than Warm White because amber wavelengths read less bright to the eye. Pick this when buyers specifically want "the way Christmas lights used to look" on both the roofline and the porch/tree accents.
Warm White (3000–3500K)
⭐ Bestseller — 70%+ of residential installs (pair with C9 Warm White on the roof)
The contractor workhorse. Slightly brighter than Sun Warm (cleaner warm tones read visually brighter than deep amber) without losing the cozy feel. Works on traditional homes, modern farmhouses, and contemporary residential. If you stock one white C7 for the truck, stock this one.
Pure White (3950–4200K)
Best for: Contemporary homes, commercial accent
Crisp, modern white. Popular on commercial entries and contemporary porches.
Cool White (5000K+)
Best for: Commercial signage, themed displays
Bright, slightly bluish. Reserve for commercial use or specific themed installs.
Pro tip from Jason
Don't accidentally mix Kelvins, but DO deliberately alternate them when you want the "champagne look." If part of your roofline is Warm White and part is Pure White (random sectional mixing), the visual mismatch looks unprofessional. But if you alternate Warm White and Pure White every other bulb on the same stringer, the two-tone effect creates a designed "champagne" shimmer that homeowners love — especially on porches and ornamental Christmas trees at close-to-mid range. The rule: pick one consistent Kelvin per property, OR deliberately alternate every other bulb. Never split runs into Kelvin sections.
Jason has trained thousands of contractors at his HQ in Kentucky. These are verified Google reviews from real students:
$80,000 deal one week after class
Ashley Prince
Local Guide · Verified Google review · 5 stars
"I attended Jason's permanent lighting/Christmas lighting class at his HQ in Kentucky. The setup was perfect and the instruction was very helpful. One week out of the class and I closed an $80,000 deal. Jason is very knowledgeable as well as his industry specific guest speakers. I look forward to next year."
Mid 6 figures revenue
Don Bui
Verified Google review · 5 stars
"Jason is extremely patient and helpful. After attending his workshop and applying his strategy, my company now makes mid 6 figures. Thanks Jason!"
Biggest ticket Christmas Light job — in March
Josh C
Verified Google review · 5 stars
"Jason's training is a game changer. In particular, I was impressed with the deep dive we took into using AI for your business. Not long after attending the training I closed my biggest ticket Christmas Light job to date (do note it's March right now!). Don't even think twice about it, this is the room you want to be in."
Three compound-query scenarios contractors hit when picking C7 LED bulbs. Install context + spec answer + what to avoid.
C7 install on a shallow eave (single-story ranch / cottage)
Shallow eaves under 8 ft from ground read disproportionately big when wrapped in C9. C7's smaller 1-1/4″ bulb stays proportional to the eave scale. Use 12″ socket-spacing wire; pair with C7 Wedge Tuff Clip on shingle or gutter. Most contractors who tried C9 on a ranch home come back to C7 the next year for the same property.
C7 on ornamental Christmas trees (cone-form display trees)
C7 is the right size for the ornamental cone-form Christmas trees that go on front entries, porches, and commercial entryways. Wrap the cone form factor from base to top at 12″ or 15″ spacing. The Minleon V2 C7's polycarbonate lens doesn't yellow under direct UV, so the tree holds its color across multiple seasons. We do NOT recommend C7 for trunk-wrapping or branch-wrapping real outdoor trees — the small bulb gets lost on those surfaces. C7 is also the wrong pick for column wraps.
Warm White C7s at 15-inch spacing on an ornamental Christmas tree — the right size and density for the cone form factor.
Indoor porch or sheltered sunroom C7 ambient install
C7 is UL Listed indoor/outdoor — works inside as ambient mood lighting on a porch ceiling or sunroom soffit. The polycarbonate shell + IP65 rating handles porch humidity and seasonal swings without yellowing. 12″ spacing on a porch ceiling reads polished without being overdone.
Frequently asked questions
Real questions contractors ask when picking C7 LED bulbs.
Are C7 LED bulbs brighter than C9 LED bulbs?
Total lumen output: C9 wins. C7 produces about 40–80 lumens per bulb; C9 produces 80–120 lumens. The larger C9 casing fits more SMD chips, which is why C9 has higher raw output. Perceived brightness at close-to-mid range: C7 often looks brighter. Because C7 puts roughly the same lumens-per-chip into a smaller bulb surface, the luminance density (lumens per square inch) is higher. Homeowners standing within 30 feet often describe C7 as sparklier and more concentrated than C9 — even though C9 has higher total output. At long distance (100+ feet), C9 wins on visibility because total lumens matter more than density.
What's the difference between C7 and C9 Christmas lights?
C7 is the smaller of the two pro Christmas light bulb sizes. C7 is approximately 2.125 inches tall × 7/8 inch wide with an E12 candelabra base. C9 is approximately 2.875 inches tall × 1.1875 inches wide with an E17 intermediate base. C9 has more total lumens and reads bolder at long distance (100+ ft). C7 has higher luminance density and reads sparklier at close-to-mid range. C9 is the contractor standard for medium-to-large residential rooflines and commercial buildings. C7 is the contractor pick for smaller homes, porches, door outlines, ornamental Christmas trees, and indoor displays. The bases are NOT interchangeable — C7 bulbs only fit C7 stringer wire (E12 sockets).
Can I use C7 LED bulbs on a roofline?
Yes — and many pro contractors prefer C7 on smaller homes. The old conventional wisdom said "C9 is the roofline standard, C7 is for accents," but that's only partially true. C7 reads as sparklier at close-to-mid range because of its higher luminance density, and homeowners with smaller homes (under ~2,000 sq ft) often prefer the C7 look on their roofline. Use C7 on rooflines at 12-inch spacing, same as C9 stringer wire. For medium-to-large homes (2,000+ sq ft) or commercial buildings visible from 100+ feet, C9's higher total lumens read better at distance.
What spacing should I use for C7 LED bulbs?
12-inch spacing for linear runs (rooflines, porches, columns, door outlines). 12-inch or 15-inch spacing for ornamental Christmas trees wrapped around the cone form factor. C7 stringer wire is commonly available in both 12-inch and 15-inch spacing. We never use 6-inch spacing — it's too dense for pro installs and isn't an industry standard.
What socket do C7 LED bulbs use?
E12 candelabra base. Every commercial C7 LED bulb uses the E12 base — the same socket size used in standard household nightlight bulbs. Universal across C7 manufacturers — our Minleon V2 C7 bulbs fit any existing C7 stringer wire. C7 bulbs do NOT fit C9 stringer wire (which uses the larger E17 intermediate socket).
Are C7 LED bulbs dimmable?
Yes — Minleon V2 C7 LED bulbs are dimmable on TRIAC dimmers rated for LED loads. Use a forward-phase TRIAC dimmer for clean, flicker-free dimming. If pairing with a smart home or specific commercial dimmer system, message us before ordering a case.
How many C7 bulbs do I need for an ornamental Christmas tree?
Depends on tree height and cone diameter. At 12-inch spacing on a typical 6-ft entryway ornamental tree, plan 30-50 bulbs. At 15-inch spacing on the same tree, plan 25-40 bulbs. Taller display trees (8-10 ft commercial entries) at 12-15" spacing run 60-100 bulbs depending on cone diameter. Order 10-15% extra for replacements across the season.
How do I make an ornamental Christmas tree look animated?
The pro contractor trick: swap every 4th or 5th bulb on the stringer for a twinkle bulb. Twinkle bulbs have a built-in random-flash circuit that fires the LED on and off in a non-repeating pattern. With one twinkle bulb every 4-5 sockets spread across the tree, the whole tree appears to shimmer and animate from the street — even though most of the bulbs are steady. Transforms a static display tree into a live visual that catches passing drivers' attention.
How many C7 bulbs do I need per 100 feet of roofline or porch?
100 bulbs per 100 feet at standard 12-inch spacing. One bulb per foot is the contractor standard for linear C7 runs (rooflines, porches, columns, door outlines).
What color temperature should I order for C7?
Warm White (3000K) is the bestseller — about 70%+ of residential installs use it, and it's also the recommended C9 default. Match the C7 Kelvin to the C9 Kelvin on the same property: if your roofline uses Warm White C9, use Warm White C7 on the porches, door outlines, and ornamental Christmas trees. Mixing Kelvins within one property looks unprofessional from the street. Sun Warm White (2600K) is the "old incandescent" alternative — deeper amber, looks exactly like the traditional bulbs from older Christmas lights — for buyers who specifically want that nostalgic look on both the roof and the accents.
Can I install C7 bulbs indoors?
Yes — Minleon V2 C7 is UL Listed for indoor/outdoor use. C7 is the contractor-preferred bulb size for indoor garland, wreaths, mantels, and ornamental indoor Christmas trees because the smaller bulb is less visually overwhelming in close quarters. Use a timer with a 4–6 hour daily cycle to extend bulb life on indoor installs.
Is Warm White brighter than Sun Warm White C7?
Yes — Warm White (3000K) reads slightly brighter than Sun Warm White (2600K) on both C7 and C9. Two reasons: (1) higher-K LEDs are typically slightly more lumen-efficient per watt, and (2) the human eye perceives cleaner warm tones as brighter than deep amber, because amber wavelengths sit lower on the visual luminance curve. Side-by-side at night, Warm White looks "brighter and a little cleaner"; Sun Warm looks "warmer and a little dimmer." Neither is wrong — pick based on the look you want. Most contractors default to Warm White because the slight brightness boost helps the install read from further away.
Hey, should I get C7 or C9 for my one-story ranch?
C7. Ranch homes have shallow eaves close to the ground, and C9's 1-1/2" envelope reads oversized on them. C7's 1-1/4" stays in proportion. Same TRIAC-dimmable, same IP65, same Kelvin options as C9. Most contractors who try C9 on a ranch home swap to C7 the next year.
Can I use C7 on the same socket wire as C9 if I cap one socket per pair?
No. C7 has an E12 base (smaller diameter); C9 uses E17. The socket-wire socket itself is sized to one base or the other — physically, a C7 bulb in a C9 socket flops sideways and won't make electrical contact. Run a separate C7 socket-wire line for the C7 install.
C7 LED bulb glossary
Pro terms and spec definitions, in plain English.
C7 bulb
The smaller of the two pro Christmas light bulb sizes, approximately 2.125 inches tall × 7/8 inch wide. Used for rooflines on smaller homes, ornamental Christmas trees, porches, door outlines, and indoor displays.
E12 (Candelabra base)
The screw base used by every pro C7 LED bulb. Same socket size used in standard household nightlight bulbs — smaller than E17 (the C9 base). Universal across C7 manufacturers.
SMD LED
Surface-Mount Device LED — the diode style used in modern pro C7 bulbs for brighter, more uniform output than older through-hole LED designs.
Luminance density
The amount of light output per square inch of bulb surface area. Higher luminance density = sparklier, more concentrated visual effect at close-to-mid range. C7 has higher luminance density than C9 (same lumens-per-chip packed into a smaller bulb surface), which is why C7 often looks brighter at close range despite C9 having higher total lumen output.
Faceted lens
A diamond-cut polycarbonate lens with multiple flat surfaces. Faceted lenses throw light in every direction — combined with C7's higher luminance density, this produces the characteristic sparkly C7 look.
Polycarbonate
The plastic resin used in pro-grade C7 LED bulb lenses. 200× stronger than glass and 30× stronger than acrylic. Resists UV yellowing, cold cracking, and impact damage.
TRIAC dimmer
The standard dimmer type used in residential and commercial wiring. Modern pro C7 LED bulbs are designed to work on TRIAC dimmers rated for LED loads.
Color temperature (Kelvin)
The warmth or coolness of a white-light bulb, measured in degrees Kelvin. Lower K = warmer (Sun Warm White: 2600K). Higher K = cooler (Cool White: 5000K+).
Ornamental Christmas tree (display tree)
The cone-form display tree (real or artificial) used for residential and commercial entryway decor. C7 stringer wire is wrapped around the cone form factor from base to top at 12-inch or 15-inch spacing. We do NOT wrap C7 on real outdoor tree trunks or branches — the bulb gets lost on those surfaces.
Twinkle bulb
A C7 (or C9) LED bulb with a built-in random-flash circuit that fires the LED on and off in a non-repeating pattern. Pro contractor trick: swap every 4th or 5th bulb on a stringer for a twinkle bulb to make an ornamental Christmas tree or accent run appear animated from the street. Most of the bulbs stay steady; the few twinkle bulbs scattered throughout make the entire install look like it's shimmering.
Pro-grade (commercial-grade)
A bulb built for repeated commercial install/uninstall cycles, multi-season storage, and harsh outdoor exposure. Pro-grade specs include polycarbonate lens, nickel-plated E12 base, UL Listing, and a published warranty.
