Manufacturers| Cal-Royal

The Cal Royal Products 300 Series Door Closer comes in two versions.   One version is the size 3 to 6 spring, which would be for larger exterior doors.  The 3 to 6 spring size is for doors 36" to 48" wide.  The second version is the size 1 to 4 spring size.  The 1 to 4 is considered a Barrier Free door closer, because the spring tension can be turned down to less than 8 pounds of resistance, making the door easy to open.  The 1 to 4 should be used on interior doors and smaller, less than 36" wide exterior doors.  This door closer is a standard template closer with a hole spacing of 3/4" x 9-1/16" center to center, which is what we find on many aluminum framed glass storefront doors.   This closer has a 5 year warranty and is considered a Grade 1 closer, the heaviest duty rating possible.

The Cal Royal Products 900 Series Door Closer is a unique one, it is the only closer that has the 3/4" x 11-1/8" hole spacing.  We have seen a few versions of this closer, some have 6 mounting holes, and some have 4.  If your closer has a spacing of 11-1/8", and has 3 holes on each size, this is the only closer I know of that is like that.  The 900 Series is a Grade 1 closer, the heaviest duty rating possible.  The door closer has adjustable spring tension, closing, latching and back check valves and is Barrier Free rated.  The package comes with all of the  mounting screws and a parallel arm bracket, so it can be mounted on the left, right, push, pull or top jamb for mounting.