This ignitor is the "narrow" style used by International Comfort Products on many furnaces manufactured under the Comformaker, Heil, Tempstar, and Arcoaire brands. The ceramic block on this ignitor is 1-1/4" wide, 1-3/16" deep, and 1/2" thick on the edge without the ridge. There is a locating ridge on the top right corner of the ceramic block when viewed from the wire end. The heating element portion of the ignitor is 2-1/4" long. The ceramic block is in a metal mounting bracket. The bracket is a snap-in fit and the ignitor can be taken out and snapped into a different bracket if desired. The lead wires are 5-1/4" long and are terminated with a plug that has two male pins inside a housing that has one square end and one pointed end. This connection style was used on many Comfortmaker, Heil, Tempstar, and Arcoaire furnace models. Two high temperature ceramic wire nuts are also included and can be used if your existing plug is damaged or is not long enough. This ignitor is the replacement for Comfortmaker Heil Tempstar Arcoaire part numbers 1009604, 1096047, and 1096048.This part is covered by the exclusive OneTrip Parts® two year limited replacement policy. If this part fails within two years from date of purchase, return the defective part and a copy of the original invoice to the place of purchase for replacement. Contact the authorized OneTrip Parts® dealer that you purchased the part from for details.Original equipment manufacturer"s brand name(s) and part numbers are used for identification purposes only. This item is supplied by OneTrip Parts® and meets or exceeds original equipment specifications.