tubulⒶRCH
Five families covering every fluorescent retrofit job — T5, T8, PL, PLL, and U-bend. All UL-certified, DLC-listed, with structured spec data and verified compatibility.
1 family shipping now · 4 more in Q3 2026
Five families. One taxonomy. Pick the form factor that matches your fixture.
Each family is form-factor-specific and includes verified ballast or wiring compatibility, structured spec data, and downloadable IES files.
25 fluorescent SKUs replaced by one dip-switchable lamp. 4FT linear, G13 bipin.
High-output T5 replacement. 2FT and 4FT. Direct-wire bypass for long-term reliability.
G24 quad biax replacement. Plug-and-play into existing ballast. Downlight and wall-pack applications.
2G11 long-pin biax replacement. Plug-and-play. Common in architectural recessed fixtures.
FB32T8 / U-bend T8 troffer replacement. A+B hybrid for maximum install flexibility.
Tell us what you're replacing.
Route directly to the matching tubulⒶRCH family by legacy fluorescent SKU.
Used across every commercial vertical.
200+ ballasts. Tested. Documented.
Every tubulⒶRCH family ships with a verified ballast compatibility list. Search by ballast model number, manufacturer, or install type.
- Instant-start electronic — most common, highest compatibility
- Programmed-start electronic — reduced list; occupancy-sensor spaces
- Rapid-start electronic — pre-2005 fixtures; Type B recommended
- Magnetic ballast — Type B bypass required
- P.E. sign-off per release
(deferred to launch)
Three things every retrofit buyer should know.
LED tube retrofit is more nuanced than "screw in a new bulb." These guides cover the questions we hear most often.
UL Type A vs Type B vs Type A+B
Type A keeps the existing ballast. Type B bypasses it. Type A+B does either. Each has trade-offs in install labor, long-term maintenance, and compatibility risk.
How to read a ballast compatibility list
What does ✓ vs blank mean? When is "compatible" actually "marginal"? Why ballast age and silent revisions matter. How to interpret our matrix legend.
When to retrofit vs replace the fixture
Retrofit lamps are fast and cheap. New fixtures give better photometric performance and longer warranties. Includes a 5-question decision framework.
Other lamp collections.
Specify the right tube.
Quotes in 24 hours. Pilot install kits ship same day for retrofits ≥50 fixtures.