Photo 1 of (UNTESTED) F40CW (2 Pack) 4ft Fluorescent Tube Light Bulb 40W 40 Watt T12 Cool White 4100K 1.5 inch Diameter Replaces F40T12/CW F40T12 F40XL/SP41 F40/SPX41 F40/SP41/ECO F40SP41 F40CWX, F40 CW Supreme (2)

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Photo 1 of (UNTESTED) F40CW (2 Pack) 4ft Fluorescent Tube Light Bulb 40W 40 Watt T12 Cool White 4100K 1.5 inch Diameter Replaces F40T12/CW F40T12 F40XL/SP41 F40/SPX41 F40/SP41/ECO F40SP41 F40CWX, F40 CW Supreme (2)Photo 2 of (UNTESTED) F40CW (2 Pack) 4ft Fluorescent Tube Light Bulb 40W 40 Watt T12 Cool White 4100K 1.5 inch Diameter Replaces F40T12/CW F40T12 F40XL/SP41 F40/SPX41 F40/SP41/ECO F40SP41 F40CWX, F40 CW Supreme (2)Photo 3 of (UNTESTED) F40CW (2 Pack) 4ft Fluorescent Tube Light Bulb 40W 40 Watt T12 Cool White 4100K 1.5 inch Diameter Replaces F40T12/CW F40T12 F40XL/SP41 F40/SPX41 F40/SP41/ECO F40SP41 F40CWX, F40 CW Supreme (2)