Glynn Johnson 104S-SPBLK Concealed Overhead Stop for 1-3/4” Door. 104S - Heavy Duty-Stop Only. Size 4 for door opening using butts or offset pivots - Opening size 33-1/16" - 39". Matte Black100 Series Heavy-Duty Concealed Overhead Door Holders/StopsGlynn-Johnson 100 Series holders and stops provide the most reliable and versatile concealed overhead door control. They are designed for installation on virtually all types of doors mounted on conventional type butt hinges, pivots, continuous hinges, swing clear hinges and numerous other specialty hinges. When used in conjunction with many surface-applied door closers, 100 Series holders and stops provide the most effective control for entrance doors and vestibule doors of all types, as well as heavy or often used interior doors. Templates provided allow for variable mounting positions, ranging from 85° - 110° of opening.These models provide a wide range of optional features, and are ideal for use on entrance and vestibule doors, large doors, doors opened frequently, or doors subject to abuse. These models are also furnished with an offset style jamb bracket.