Forged brass construction. Clear vinyl pad inserts protect glass. Polished brass with lacquered finish or chrome plated. The maximum recommended door width is 24" (610 mm). The recommended maximum weight of the door should not exceed 50 lbs. (22.7 kg) using two hinges, 75 lbs. (34 kg) using three. Required glass fabrication for hinge installation is two holes. Two per pack.