Commercial Door Closer in Duronotic with Backcheck - Size 4The Global Door Controls TC204 commercial door closer comes with a fixed size four spring tension in a duronotic finish. The closer is recommended for use on aluminum store front doors, wood or hollow metal commercial applications. For doors weighing up to 243 lbs. Grade 1 certified, ANSI BHMA A156. 4 Size 4 fixed spring tension 2 independent valves control sweep and latch closing speeds Supplied with both wood and machine screws Non handed 9 1 16 in.