DuraVent DuraVent Aluminum Oval Increaser 4" x 5" with 4" Inner Diameter

Oval Gas Vent Collection Aluminum Oval Increaser 4" x 5" with 4" Inner DiameterThis Aluminum Oval Increaser 4" x 5" with 4" Inner Diameter from the Oval Gas Vent is a Type B gas component that will meet the needs of any Type B installation. This is used to increase the oval vent diameter.DuraVent's innovative system for a lock-tight connection for Type B Gas Vent called DuraLock. See the alignment indicators meet; feel the ends grasp together; hear the snap as the connection firmly locks into place. Type...