The Jackson 105 degree concealed closer body drops into standard 1-3/4" x 4" (45 x 102 mm) header extrusions or anything larger, and the body itself measures 11-5/8" long by 3-11/16" wide. If your header tube is smaller than 1-3/4 x 4, the body will not go in. It is also interchangeable with Jackson and similar brands of overhead concealed closers, so in most storefront headers it goes back into the same pocket the old one came out of.

No. This is the closer body only, less arm, and mounting clips are not included. Unless you are reusing the clips already in your header, you have to order the clip package that matches your application, plus the arm and spindle for center hung or offset hung as applicable. Budget for those parts on the same order or the door does not go back together.

It will not hold open. This is the 105 degree no hold open version, so the door returns and latches every time it is released. Choose it where the opening has to stay closed for security, conditioned air, or smoke separation. If someone needs the door parked open for deliveries or moving furniture, you want a hold open version instead, not this one.

No. This body is built for a 105 degree swing, so it is not the part for an opening that has to swing wider, such as a door on a corridor where gurneys or pallet jacks come through. The Sargent 269 is an overhead concealed closer with 180 degree opening capability if you need the wider swing.

The CRL Jackson 20-101M-09 closer body is a heavy spring size unit rated to a maximum door weight of 250 lbs., mounted concealed in the frame. The Norton Rixson 73 Series center hung double acting overhead concealed closer is also a heavy duty, Grade 1 unit with a 250 lbs capacity, and it ships with a cover plate. Both are double acting capable: the Jackson body is listed as single or double acting, and the Rixson 73 is a double acting closer. The practical difference is what comes in the box - the Jackson unit is a body only, less arm, so mounting clips and arm hardware are ordered separately.

The CRL Jackson 20-101M-09 is a heavy spring size body rated for doors up to 250 lbs. For a lighter aluminum door, the Norton Rixson 608 Series is a standard duty center hung overhead concealed closer for 200 lb doors, the Norton Rixson 700 Series is a standard duty center hung unit with 200 lbs capacity, and the Norton Rixson 0608 Series is a standard duty offset hung unit for aluminum doors up to 200 lbs. Choose among those three by hanging method: center hung for the 608 and 700, offset hung for the 0608.

The CRL Jackson 20-101M-09 is a 105 degree no hold open closer body, so its swing is set at 105 degrees. When the opening has to travel farther, the Sargent 269 is an overhead concealed closer with 180 degree opening capability, a heavy duty Grade 1 unit in the 269 Series. Confirm the wall or adjacent surface actually clears the wider arc before specifying it.

When a facility spec calls out Grade 1 on the overhead concealed closer, the comparable heavy duty units that carry that rating are the Sargent 268 with a cast iron body, the Sargent 269 with 180 degree opening capability, the Sargent 278 with an exposed arm, the Norton Rixson 73 Series, and the Dormakaba ITS9613 in the ITS96 Series. The Sargent 268, 269, 278 and the Rixson 73 are all heavy duty Grade 1. Any of those can be submitted against a Grade 1 line item.

Yes. The Jackson heavy duty concealed body is rated single or double acting, so it works on a one way storefront leaf or on a door that swings in and out, such as an interior traffic door between a dining room and a kitchen. The 105 degree setting applies either way.

An overhead concealed closer mounts inside the frame header, so nothing shows on the door face. That is the reason to pick it: aluminum storefront and glass entrances where a surface closer looks wrong or there is no top rail to mount to. The trade off is access. A surface closer can be swapped in an hour with the door hanging; a concealed body means pulling the door and getting into the header. On existing openings that already have a concealed pocket, staying concealed is the cheaper path.

Yes. The body has dual action valves, one for closing speed and one for latching speed, so you can slow the sweep for traffic and still bring the door in hard enough to latch. Both are set at the closer after the door is hung and the arm is connected.

The Jackson heavy duty concealed closer body is U.L. Listed and is a commercial rated door control, not a residential one. That matters for institutional and MRO specs where the door control on a rated or code governed opening has to carry a listing.

For the same weight class, the Norton Rixson 73 Series is a center hung double acting overhead concealed closer with a cover plate rated to 250 lbs and listed as Grade 1 heavy duty. The Sargent 268 with a cast iron body and the Sargent 278 with an exposed arm are also Grade 1 heavy duty concealed closers. The Jackson body is the one to stay with when you are replacing an existing Jackson or a compatible concealed closer in a storefront header, since it is interchangeable with those.

They are not the same install. The CRL Jackson 20-101M-09 mounts concealed in the frame and is supplied as a body only, less arm. The Sargent 278 is an overhead concealed closer with an exposed arm - the closer sits in the header but the arm is visible on the door face. If the reason for choosing concealed hardware is that no arm should show, the Sargent 268 with a cast iron body is the closer match among the Sargent heavy duty Grade 1 units.

The CRL Jackson 20-101M-09 is a concealed in frame closer body listed as single or double acting. The Dorma RTS88 Series RTS01 is an overhead concealed closer built specifically for center hung side load applications in aluminum door and frame, double or single acting and non-handed, which means one part number covers both hands of a storefront pair. For center hung on the Rixson side, the 608 Series and 700 Series are center hung units; the 0608 Series is the offset hung version.

For a facility standard, the heavy duty Grade 1 concealed closers are the Sargent 268 Series, 269 Series and 278 Series, the Norton Rixson 73 Series, and the Dormakaba ITS9613 in the ITS96 Series. The Sargent 269 covers openings needing 180 degree swing and the Sargent 278 uses an exposed arm, so a single-brand standard may still need two part numbers depending on the opening. The CRL Jackson 20-101M-09 body is described as interchangeable with all Jackson and similar brands of overhead concealed closers and fits standard 1-3/4 inch by 4 inch or larger header extrusions, which is what lets it drop into existing headers during a phased changeover.

The CRL Jackson 20-101M-09 is sold as a body only, less arm, and fits standard 1-3/4 inch by 4 inch or larger header extrusions, interchangeable with Jackson and similar brands of overhead concealed closers. Mounting clips are not included, so unless the existing clips are reused a clip package is required. The comparable units are supplied as complete closers rather than bodies: the Norton Rixson 73 Series includes a cover plate, and the Sargent 278 comes with an exposed arm. For a body-only swap into a header that is staying, the Jackson unit is the one that matches that scope.