About Brightness
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About Light Appearance
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Screw-In Base Light Bulbs
Use these bulbs in standard sockets, panels, and appliances. Brightness is measured in lumens; the higher the lumens, the brighter the bulb. Bulbs with a warm light appearance have yellow tones. Bulbs with a neutral light appearance are commonly used in workspaces. Bulbs with a cool or daylight appearance have white/blue tones and are good for inspecting. A bulb’s estimated yearly energy cost is based on 3 hours of usage per day at $0.11 per kWh.
LED bulbs last longer and are more efficient than other technologies. They generate little heat and withstand vibration. Incandescent bulbs are traditional light bulbs. Many have been phased out due to governmental energy requirements, but some are still available for special applications.
| Equiv. Incand. Bulb Wattage | Light Appearance | Brightness, lumens | Light Technology | Light Setting | Bulb Shape No. | Bulb Material | Color | Wattage | Rated Life, hrs. | Est. Yearly Energy Cost, $ | Pkg. Qty. | Pkg. | |
Tubular Bulb—Medium (Standard Household) Base (1 1/16" Dia.) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
120V AC | |||||||||||||
| 40W | Warm (2,700K) | 450 | LED | Dimmable | T10 | Glass | Clear | 5.5W | 15,000 | 0.60 | 1 | 00000000 | 00000 |
| 40W | Warm (3,000K) | 450 | LED | Dimmable | T10 | Glass | Clear | 5.5W | 15,000 | 0.60 | 1 | 00000000 | 0000 |
120V AC/120V DC | |||||||||||||
| 25W | Warm (2,400K) | 230 | Incand. | Dimmable | T10 | Glass | Frosted | 25W | 1,000 | 3.00 | 1 | 0000000 | 0000 |
| 25W | Warm (2,850K) | 230 | Incand. | Dimmable | T10 | Glass | Clear | 25W | 1,000 | 3.01 | 1 | 0000000 | 0000 |
Glass-Retaining Light Bulb Guards
A solid lens protects screw-in bulbs and retains glass if the bulb breaks.
Bulb shape numbers starting with A are standard-household bulbs, B are cone-shaped, G are globe-shaped, S are tapered, and T are tubular shaped bulbs.
Guards | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Max. Bulb | For Bulb Base | Replacement Lenses | |||||||||||
| For Bulb Shape No. | Dia. | Lg. | Ht. | OD | Type | Size | Dia. | Material | Color | Each | Each | ||
| A15, A19, A21, B10, S14, T10 | 2 7/8" | 7 1/8" | 10 1/2" | 4 3/4" | Screw In | Medium (Standard Household) | 1 1/16" | Polycarbonate Plastic | Clear | 0000000 | 0000000 | 0000000 | 000000 |
| A15, A19, A21, A23, B10, G25, S14, T10 | 3 7/8" | 7 1/8" | 10 1/2" | 4 3/4" | Screw In | Medium (Standard Household) | 1 1/16" | Polycarbonate Plastic | Clear | 0000000 | 000000 | 0000000 | 00000 |