Chainlink Never-Fail Latch Latch bar and catch shall be made from malleable iron in accordance with ASTM A-47-77 Class 32510. The swing pendant shall be made from solid cast #43 aluminum alloy. Latch shall open outward. Latch shall secure automatically when gate is closed and shall be designed to accept a padlock. Latch may not be opened accidentally and shall be 100% “dog proof.” close window