R-40 vs. BR-40

[jkriens]

I'm replacing some recessed light bulbs. The ones that are currently installed are R-40, but at the hardware store I see many more choices of BR-40 bulbs. Are the two interchangeable? (I.e., can I use BR-40s in an R-40 application?) If not, what are the important differences between the two bulb types? Thanks in advance.

-John Kriens
jkriens@cybernex.net

[Guest]

br40's are the energy efficient replacement of r40's you should use them where ever possible.. br40s have an extra bubble or reflector surface to produce more light output with less wattage...