SuperPro / SuperVent Decorator Flat Ceiling Support is used to support the weight of the vertical chimney stack when passing through a flat ceiling. Simply frame around the decorator cap between the ceiling joist and use the included trim collar for a finished look. The SuperPro / SuperVent Stove Pipe to Chimney Adapter is used to attach to the first section of chimney pipe above the support box, the male end of the adapter will extend through the support box to connect to either single or double wall stove pipe. SuperPro / SuperVent Decorator Flat Ceiling Support can support up to 50 ft. of vertical chimney pipe above the box. Additional wall supports may be necessary to stabilize the chimney pipe on a long vertical stack. An attic insulation shield may need to be installed above the Flat Ceiling Support if the chimney is extending into an attic space above the flat ceiling. SuperPro and SuperVent models are compatible with each other according to the manufacturer. The 6 in. & 8 in. diameters are the SuperPro model (compatible with SuperVent). The 7 in. diameter is the SuperVent model (compatible with SuperPro). Measurement Chart: Selkirk SuperPro / SuperVent Decorator Flat Ceiling Support Size 6" 7" 8" A 17.875" 17.875" 19.625" B 12.375" 13.375" 14.375" C 8.25" 9.25" 10.25"
