Yes, T8 LED bulbs can often replace T12 bulbs because they are the same length and use the same bi-pin (G13) base.

Philips has led the way in designing an instantaneous 'click-to-fit' LED retrofit alternative for linear electronic instant start fluorescent tube lighting. Currently, installers need to re-wire the ...

These days any standard LED lamp will match or beat a high-CRI T12’s ability to render colors, and so will the more modern fluorescent lamps known as T8 (one-inch diameter) lamps, said Stephen ...

This technique also allows the reduction of power needed to create light and increases the compatibility of the unit with fixtures using T12, T10, or T8 diameter fluorescent tubes.

Cree, Inc. is aiming to relegate fluorescent tubes to the pages of history with its new T8 series of LED tubes that promise LED-level energy savings and greatly improved light quality.