OCTAGON HOLE for Regular door closer arm, top jamb or parallel arm mounting.
Includes 3 hole adjustable shoe.
Arm Length: 12\''
Forearm Length: Min: 10-3/4\'' Max: 15-1/4\''
Thread: 10mm (3/8\'') 1.25 thread pitch
Shaft Mounting Hole: 8 Sided OCTAGON
UL Listed: R7483 615R
NOTE: This arm will work on any door closer with 6 Sided Hexagon.
The Large hole can be 6 sided Hexagons or 8 sided Octagons