Metalbest 4DT-RD Direct-Temp 4" x 6-5/8" Direct Vent Restriction Disk Galvanized Vent Pipe Direct Vent Adapter 1604285

Metalbest 4DT-RD Direct-Temp 4" x 6-5/8" Direct Vent Restriction Disk 4" x 6-5/8" Direct Vent Restriction Disk from Direct-TempThis 4 x 6-5/8" restriction disk should only be used in accordance with appliance manufacture's instructions. See appliance manual for details.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 sealLockTab securityPipe rotates easily to align system componentsNo sealant requiredHigh efficiency performanceConnection Specifications:Joint/Connection Overlap: 1-5/8"Joint/Connection Type: Twist-Lock standard on all diametersMaterial Specifications:Outer Wall: Heavy duty galvanized steelInner Wall: 304 Stainless Steel Adapter Galvanized