Bulbs have two filaments, which operate at different brightness levels.

Bulbs have two filaments, which operate at different brightness levels.

These bulbs are sized to fit tight spaces such as signs, control panels, indicators, and flashlights.

Offset pins on the base lock these bulbs into sockets. One pin is slightly higher on the base than the other pin.

Wire terminals allow you to connect these bulbs to a power source through a panel.

These miniature bulbs are sized to fit older telephone switchboards, signs, instruments, and indicators.

Commonly used in signs, instruments, indicators, and flashlights.

Use these bulbs in ovens and equipment that reaches temperatures up to 500° F.

Pins on the base lock these bulbs into sockets to withstand vibration. They're often used in machines and elevators.

These bulbs lock into GU24 light sockets with a twist.

Replace metal halide, high-pressure sodium, and mercury vapor light bulbs with longer-lasting, energy-efficient LEDs.

Switch from the yellow light of high-pressure sodium to the white light of metal halide without changing ballasts.

Energy efficient and long lasting, these four-pin bulbs are often used in task lights. They’re comparable to PL, Dulux, and Biax bulbs.