Mr. Heater 4 Inch Horizontal Vent Kit for Big Maxx MHU45LP, MHU45NG, MHU75LP and MHU75NG Unit Heaters #F102845
The F102845 vent kit is to be used for horizontal venting for any of the MHU45 or MHU75 heaters. It includes one gas vent cap, one adjustable wall thimble, a 4" elbow, one piece of 4" x 36" double wall pipe and two pieces of 4" x 24" single wall pipe, and one 3" to 4" connector.
