Contractor-grade bulbs for roofline, bushes, and trees. Same-day ship before 2 PM ET. Free shipping over $349.
C9 and C7 LED bulbs are the standard for professional Christmas light installations. C9 bulbs use a larger E17 base and are the go-to choice for roofline work on most homes — visible from the street, with the classic strawberry-shaped glow homeowners expect. C7 bulbs use a smaller candelabra base and work best on windows, smaller homes, and accent applications where a tighter spacing pattern is needed.
C9 and C7 LED bulbs look similar but serve different jobs. Watch this 2-minute video from Jason on which to pick — then choose your bulb type below.
1.25" wide · the industry standard for roofline
Bright, visible from the street. The pro choice for residential and commercial roofline installs. Most contractors run C9 on the roof and C7 on the bushes.
Shop C9 LED Bulbs →
~1" wide · best for bushes, trees, and accents
Smaller and more intimate. Use on bushes, dressed Christmas trees, mantles, and tight accent work where C9 would overpower the look.
Shop C7 LED Bulbs →We stock contractor-grade LED bulbs in warm white, sun warm white, pure white, red, green, blue, multi, and color-changing options. Two manufacturer lines are available: Tuff Bulbs (polycarbonate lenses that are 200x stronger than glass, copper-nickel bases that resist corrosion — built for storage cycling and rough handling) and Minleon V2 (the industry standard for color consistency across long runs on permanent and seasonal installs).
Every bulb on this page is field-tested on real rooflines before we list it. Most orders ship same day when placed before 2 PM ET. Free shipping over $349.
Not sure which to pick? Most professional installers run C9 warm white in Tuff Bulbs for residential roofline work. For multi-color displays, Minleon V2 holds color match better across the run. Need help sizing for your job? Call (855) 619-5483 or see our Help Me Choose guide.
18 Products
Professional-grade C9 and C7 LED Christmas light bulbs built for contractors who want their installs to stand out - and for homeowners who want results that look like the pros did it.
The big bulbs that define every roofline and detail lighting job. Multiple finishes, trusted brands, and contractor wholesale pricing you won't find at the big box stores.
The industry standard. Every finish. Contractor pricing.
Bulbs are only part of the system. To finish the job you'll also need:
SPT-1 socket wire by the spool — 500ft, 1,000ft, and contractor sizes in green and white.
Shop Wire →
Shingle tab, all-in-one, parapet, wedge, and ridge clips. Bulk pricing on 1,000+ orders.
Shop Clips →
Male and female plugs for custom extension cords, end caps, and patch points.
Shop Plugs →
50L mini strings, net lights, and accent lighting for bushes, wreaths, and tight spots.
Shop Minis →
Outdoor-rated extension cords for safe, professional installs. Various lengths.
Shop Cords →
Bulbs + socket wire + clips + plugs + end caps in one box. The fastest way to gear up. Sizes from 100ft to 2,000ft.
Shop Pro Kits →Seasonal lighting is one of the most reliable revenue streams in the industry — and the quality of your bulbs determines whether customers call you back next year or shop someone else.
We stock Minleon, Tuff Bulb, and Opti-Core. Three manufacturers with proven track records on commercial installs. Every bulb passes quality standards before it reaches the shelf.
Every brand and finish has been tested across thousands of real installs through Jason Geiman's 43,000+ member contractor community. You're not guessing. You're buying what works.
| C9 & C7 LED | Traditional Incandescent | |
|---|---|---|
| Energy use | Up to 80% less | High draw |
| Bulb life | 25,000+ hours | ~2,000 hours |
| Heat output | Cool to the touch | Hot — fire risk |
| Finish options | 5 styles available | Limited |
| Contractor margin | Higher — less waste | Lower — more replacements |
| Replacement frequency | Rarely | Every 1–2 seasons |
Which Bulb Is Right for Your Job?
Find the Finish That Fits the Job
Industry Standard. Every Finish. Built for Contractors