Cabin Heat Box (Cabin Heat Shuttle) This cabin heat box has one 2" OD inlet and two 2" OD outlets with the second outlet used to route warm air away from the low plenum area when not using heat in the cabin. Fabricated from aircraft-grade aluminum with stainless steel shaft, arm and flapper. Includes a gasket flange and four stainless steel blind rivets for mounting on the forward side of the firewall. 5.5 oz.
