Metalbest Direct-Temp 4" x 6-5/8" Direct Vent Ceiling Support

4" x 6-5/8" Direct Vent Ceiling Support from Direct-Temp Used as support on vertical applications when penetrating flat ceilings or floors. Direct-Temp system features stainless steel inner and heavy duty galvanized steel outer walls. Heavy duty centering brackets keep inner pipe centered and chamfered edges allow for easy slide-together assembly. The free-floating inner liner allows the pipe to expand and contract under high temperature, without creating gaps or stress points. The LockTab(r) is a unique design that allows for 360° rotation while securely locking the sections of pipe together with just a push of the tab. Features: Siliconozed fiberglass seal LockTab security Pipe rotates easily to align system components No sealant required 12" x 12" Base 8.73" between opposite tabs High efficiency performance Connection Specifications: Joint/Connection Overlap: 1-5/8" Joint/Connection Type: Twist-Lock standard on all diameters Material Specifications: Outer Wall: Heavy duty galvanized steel Inner Wall: 30...