Fits Models: LENNOX: ~ Montage ~ Profile 20 FS ~ Profile 30 FS ~ Profile 30 Insert ~ Optima 2 FS ~ Optima 3 FS ~ Optima 3 Insert ~ Traditions ( T300P, P11, T301P, T305P, T308P) WHITFIELD: ~ Advantage 2-T (WP2) ~ Advantage 2-T Classic (WP2) ~ Advantage 3 (WP2) ~ Advantage Plus (WP7) ~ Quest Plus FS (WP4) ~ Quest Plus Insert (WP4) Part Numbers: ~ 12150213 / H8127 / XP3500 / PH-WICART Specs: ~ Two Pack Listing ~ 400 Watts, 120V AC ~ 3/8” Diameter x 6” Length