53 – Slim Cover 55 – Full Cover | 01– Non Delayed Action 41 – Delayed Action (In Addition To Backcheck) | BC -Adjustable Hydraulic Backcheck | DS – Door Saver Arm DSHO – Door Saver Hold Open Arm EDA – Extra Duty Arm EDA HO – Extra Duty Arm Hold Open HO – Hold Open, Tri-Pack PA – Tri-Pack (standard) RA – Regular Arm SCS – Spring Cushion Stop SCSHO – Spring Cushion Stop Hold Open TA – Track Arm TAHO – Track Arm Hold Open DA – Delayed Action | 605 – Polished Brass 625 – Satin Chrome 689 – Aluminum 695 – Duro Bronze 696 – Gold | BP – Back Plate BS – Blade Stop Spacer DPPA – Parallel Arm Drop Plate DPTJ – Top Jamb Drop Plate NFB – Narrow Frame Bracket SDST – Self Drilling Self Tapping Screws |