DuraVent FasNSeal 80/90 8"x2" Combo Cap h111 For multiple heaters to be

For multiple heaters to be controlled by a single switch

When the controller is operating on Bluetooth and connection has been idle for 4hrs

Includes Universal Band

Secondary Air System: Creates a second combustion zone to enhance fuel efficiency and cleaner burning

while it is in its location of original installation

DuraVent FasNSeal 80/90 8"x2" Combo Cap h111 For multiple heaters to beFasNSeal 80 90 is a unique, patent pending system that exhausts 90+ condensing appliances with Type B atmospheric units within the same vent. Using your pre existing common vent, our cap improves the operation of both the remaining atmospheric appliances, and the new condensing unit, while not disturbing finished space during installation. Finally a solution when you need to deal with narrow lot lines, clearance to window and door openings or when