Search results for: 'dorma spring door cal doe minimum von'

The Jackson 20330 Concealed Door Closer has been around since the late 1960's early 1970's.  They are used on aluminum framed storefront doors, that have a narrow stile (frame) around the glass.  The closer is tucked up in the header of the door frame.  Jackson has been a leader in this style of door closer for almost 50 years.   The closer is manufactured in the U.S.A. under strict ISO 9001 guidelines and is designed to give long lasting, maintenance-free performance. One basic closer mechanism allows for single or double acting, center-hung, or offset applications and is non-handed. The adjustable spring power makes this closer suitable for aluminum, wood or steel doors.

Mechanism only, Spindle Length is 1/2"
See Jackson arms for replacement arms.