Columbia Lighting JT822-232U6G-FSA12-EU Dedicated Lensed Troffer, (2) T8/U-Bend Fluorescent Lamp, 58 W Fixture, 120 to 277 VAC, Steel Housing | State Electric
Technical Precision Replacement 55W Bulb for Kichler 4029 58W Circline Lamp - 9 Inch 2CT6-3500K - Amazon.com
Case of 6) TCP 32058 3500K 58W T6 2C CIRCLINE 10M HOURS Circular T6 Fluorescent Tube Light Bulb - Amazon.com