The 50 × 554 arm, is a single-acting, center-hung, shallow-depth floor closer designed for standard door frame installation for interior doors up to 250lbs. with moderate traffic.
Features
Single acting, handed, interior doors
554 concealed arm is designed to eliminate visible adjusting screws on face of door; arm bolt locks arm to closer spindle; adjustments made through heel of door
Specify spring size 3, 4, or 5 when ordering
Centering arm with adjusting screws in face of door
Available non-hold open (NBC) or automatic hold open (ABC); specify 90° or 105°
Separate and independent valves for closing speed, latch speed, and backcheck
Frame stop required on lock edge; if not supplied by frame manufacturer, Norton Rixson 60131 is recommended
Interchangeable spindle adapters
Available with floor plate or threshold installation
Cycolac, rust-proof cement case
Furnished with wood and machine screws
Extended spindles available in 1/2" increments up to 2" longer than standard
Door sizes up to 4' 0" × 8' 0"
Door weight up to 250lbs.
Benefits
Ideal for upper levels of multi-story buildings due to shallow depth design
Aesthetically appealing way to support and control the door
Centering arm allows adjustment through face of door
Concealment in-floor provides vandal resistance
Multiple valves provide enhanced control
Constructed with robust materials and internal components