Wear insert for a door channel

摘要

A wear resistant track for the rollers of an overhead door to roll against includes a pair of uniform longitudinally extruded members such as an insert and a channel and locking means for releasably interlocking the members together whereby a planar surface of the insert is flush with portions of the channel and positioned for the rollers to bear against. In one arrangement the insert was of a polymer such as nylon and the channel was of aluminum.