Sunlite Compact Fluorescent PLD 2 Pin Bulb 13W 660Lm 5000K GX23 2 Base (40542 SU) backorder47 Standard BL Recessed Edgelit Aluminum Exit NT 3PS BE Standard BL Recessed Edgelit Aluminum Exit Sign Single Face Green Letters White Panel Black Trim Plate Battery Backup (RELZXTE1GWBEMSDT USA) Standard BL Die Cast Aluminum Exit Sign Double Face Red Letters White Housing Aluminum Face Panel Battery Backup Self Diagnostics (NYKXTEU2RWAEMSDT) Sunlite Compact Fluorescent PLD 2 Pin Bulb 13W 660Lm 5000K GX23 2 Base (40542 SU) Sunlites double U shaped fluorescent lamps are fabricated to accommodate ceiling light fixtures typically found in office spaces clinics medical centers and many other commercial as well as industrial settings