Mr. Heater 3 Inch Vertical Vent Kit for Big Maxx MHU50 and HSU50 Unit Heaters
The F102840 vent kit is to be used for vertical venting only for the MHU45 heaters or for horizontal or vertical venting of the MHT45 tube heaters. It includes one gas vent cap, one storm collar, one adjustable roof flashing, one adjustable ceiling/wall thimble, one 3" elbow, one piece of 3" x 36" double wall pipe and two pieces of 3" x 24" single wall pipe.