Cal-Royal CR441 — Grade 1 Adjustable Door Closer (Sizes 1–6)Cal Royal CR441 Heavy Duty Grade 1 Door Closer Cal Royal CR441 is a heavy duty Grade 1 surface door closer with adjustable spring sizes 16. Non handed for regular, top jamb, or parallel arm mounting. Cast iron body, standard back check, full cover included. Product Specs Brand Cal Royal Series Model CR441 Adjustable 16 Mounting Regular Top Jamb Parallel Arm (non handed) Body Cast iron Full cover included Pattern LCN 4040 4041 hole pattern (2 1 4 5)