T12, medium bi-pin base fluorescent replacement bulb for use with any ballast type. Provides cool white light ideal for hospitals, basements, garages and manufacturing settings. Features low mercury levels. Environmentally friendly. No. 323360: Wattage: 20W, Maximum Overall Length (MOL): 24 In., Light Color: Cool White, Bulb Shape: T12, Base Type: Medium Bi-Pin, Use: General Purpose, Lumens: 1200 Lm., Color Temperature: 4100K, Life in Hours: 9000 Hrs., Energy Star Rated: No, Pkg Qty: 2, Package Type: Shrink Wrap No. 323428: Wattage: 30W, Maximum Overall Length (MOL): 36 In., Light Color: Cool White, Bulb Shape: T12, Base Type: Medium Bi-Pin, Use: General Purpose, Lumens: 2250 Lm., Color Temperature: 4100K, Life in Hours: 18,000 Hrs., Energy Star Rated: No, Pkg Qty: 2, Package Type: Shrink Wrap No. 323600: Wattage: 40W, Maximum Overall Length (MOL): 48 In., Light Color: Cool White, Bulb Shape: T12, Base Type: Medium Bi-Pin, Use: General Purpose, Lumens: 2600 Lm., Color Temperature: 4100K, Life in Hours: 20,000 Hrs., Energy Star Rated: No, Pkg Qty: 1, Package Type: Box No. 323352: Wattage: 40W, Maximum Overall Length (MOL): 48 In., Light Color: Cool White, Bulb Shape: T12, Base Type: Medium Bi-Pin, Use: General Purpose, Lumens: 2600 Lm., Color Temperature: 4100K, Life in Hours: 24,000 Hrs., Energy Star Rated: No, Pkg Qty: 2, Package Type: Shrink Wrap