900 series, 12916 commercial grade 1 door closer with cover, 2 million cycles, adjustable size 1-6, fits doors from 2' to 5' width, aluminum finish, UL listed 3 hour fire rated, ADA Compliant, retrofit hole pattern 5 inch horizontal x 2-1/4 inch vertical measurements, Tri-Packed for regular, top jamb & parallel arm applications, adjustable spring tension, sweep & latch valves.