Centrotherm B-Vent base support bracket
Supports up to 98' of flexible or 164' of single wall ridged vent pipe inside a b-vent chase.
Lower the Base Support so that its stem is securely seated into the hole of the B-Vent Support Bracket. Install lock washer onto stem.
Use two fasteners per side to affix the B-Vent Support Bracket to the ceiling joists.
From the Base Support, make the connection to the appliance with rigid components