Limited stock on original replacement. If original replacement is not available, we will ship you a shop-built assembly at no extra cost. Fan & limit control. Switch screwed to the end of a 3" bar. 22127 fan switch is rated at F115F. 22126 limit switch is rated at L130. Fan & limit sensors are not available separately. Base plate with 3 terminals measures 3 x 3-1/8". Used on MAC 1155 & 1165 furnaces. Number 42001 is noted on part. Replaces 6261740. NLA - limited to stock on hand.