Green Creative's T5 Direct Replacement LED Tubes instantly turn on at full output and are designed to replace F21T5 fluorescent lamps without removing/bypassing existing ballasts. Compatible with most program start electronic F21T5 ballasts with no rewiring or socket changes. Green Creative's chart ensures lamp/ballast compatibility. Test with local main before LED install due to potential variances.
Here is the Green Creative, 120 degree beam angle, frosted lens, G5 miniature bi-pin retrofit LED tube lights. Part number 12T5HE/3F/8(XX)/DIR, has a Power Factor of 0.9 and consumes just 12 watts of 120 to 277 volt 60 Hz energy. Suitable for use in dry, damp or totally enclosed fixture locations, these LED T5 replacement tubes are dimmable (a dimming fluorescent ballast is required - See the dimmer and ballast compatibility sheets), will produce between 1,420-1,550 Lumens of light output (that's an awesome 118-125 Lumens Per Watt), has a CRI of 82 and a rated life of up to 50,000 hours a L70.
The physical dimensions of the Green Creative LED T5 LED retrofits are 33.98 long by 0.67 wide, designed to retrofit existing linear fluorescent F21T5 installations and carry a 5 Year Limited Warranty.