The Satco non-dimmable 11 watt 8" diameter 6500K T9 Circline LED bulb generates as much light as a 22 watt T9 Circline fluorescent bulb. No ballast or external driver needed.
The ballast must be bypassed when present.
No lead or mercury means easy and environmentally safe disposal
Saves 11 watts compared to a 22 watt fluorescent bulb
Very long life - Rated to still put out 70% as much light after 50,000 hours as it did when brand new.
Not recommended for use in enclosed fixtures because heat build up will shorten life. Do not "hot swap" this bulb. Turn off fixture before replacing bulb.