Stanley Security Heavy Duty Parallel Arm Set with Stop for D3550 Series

No. This is a parallel arm set, and parallel arm mounting is a push side application. The D3550 closer body itself supports hinge (pull side) mounting, top jamb (push side), and parallel arm (push side), but each of those needs the arm made for it. For a pull side installation you need the regular arm, not this parallel arm with stop.

The A45-505S is a heavy duty parallel arm set with stop for the D3550 series - it is the arm assembly and stop, not a closer body with a hydraulic cylinder. If you need a complete surface mounted closer rather than an arm, the comparable set includes full units such as the BEST HD8000, a heavy duty Grade 1 surface mounted closer, and the Falcon SC71A, a heavy duty Grade 1 surface mount closer. Order one of those when the opening has no closer on it yet, and order the A45-505S when a D3550 body is already on the door and you are changing or replacing the arm.

The A45-505S is a stop arm - it limits how far the door swings, it does not hold the door open. For a hold open function, the comparable set includes the Accentra 51 Series industrial closer with a tri-packed hold open arm in sizes 1-6 and the Orca Hardware BHDC1958 with a tri-packed hold open arm and a parallel bracket. Both are complete closers with the hold open built into the arm.

The A45-505S gives parallel arm mounting on the push side with a stop, but it depends on a Stanley D3550 body. If you would rather buy one complete heavy duty unit, the set includes the BEST EHD9000, an extra heavy-duty surface mounted closer with adjustable spring sizes 1-6, the Sargent 1431 Powerglide heavy-duty surface closer with adjustable spring power, and the LCN 1460T heavy duty surface-mounted closer. Each of those is a self-contained closer, so you specify the arm and stop options with the unit rather than sourcing the arm separately.

The A45-505S is specifically a parallel arm set mounted on the push side. Where a parallel arm will not work, look at pull side units: the Corbin Russwin DC5230 is a Grade 1 surface closer with a slide track arm standard and pull side mounting, the Corbin Russwin DC6200 uses a double lever regular arm with pull side mounting, and the Dorma 8916-JT is a Grade 1 heavy duty jamb track closer with frame face mounting on the pull side, adjustable size 1-6. A slide track or jamb track arm keeps the arm tight to the door face rather than projecting out.

A parallel arm set with a built in stop limits how far the door swings, so on many openings it takes the place of a separate overhead or wall stop. The arm mounts on the push side of the door with the arm running parallel to the door face. Keep in mind the stop in the arm takes the abuse of anyone throwing the door open, which is why the heavy duty version exists for higher traffic openings.

The Stanley D3550 Series closer platform is listed as ADA compliant, and it uses all weather fluid so opening force stays consistent through temperature swings on an exterior opening. Compliance in the field still comes down to how the spring power and sweep are adjusted at the closer body, since ADA opening force is a measured value at the door, not a property of the arm.

For a complete heavy duty surface closer instead of an arm assembly, the BEST HD8000 Series and BEST EHD9000 Series are both Grade 1 heavy duty, with the EHD9000 adjustable spring sizes 1 through 6. Sargent's 1431 Powerglide and 281 are Grade 1 heavy duty as well, and the Falcon SC71A is a heavy duty Grade 1 surface mount. Any of those ship as a closer with arm, so you are not buying the body and arm separately.

The A45-505S is the heavy duty arm option for the D3550 series. For interior or lower-traffic openings, the comparable set has lighter complete closers: the LCN 1250 is a light-duty surface-mounted closer with sizes 1-5 and all-weather fluid, the BEST SL6000 is a Grade 1 light duty surface mounted closer with adjustable spring sizes, and the Falcon SC61A is a light to medium duty Grade 1 cast aluminum surface closer. All three are complete units rather than arm assemblies.

No. The A45-505S is built for the Stanley D3550 series body, and closer arms are not interchangeable between manufacturers - the shoe, forearm and pinion connection are specific to the closer they were made for. If you are working on an LCN 1260 series body instead, that is a separate closer family; the LCN 1261 is a 1260 Series surface-mounted closer with adjustable spring sizes 1-5 and cast iron construction. Match the arm to the body already on the door.

The A45-505S is an ADA compliant commercial arm set, but it only works on a Stanley D3550 body. On an aluminum storefront with no existing closer, a complete unit is the cleaner path: the Norton Rixson 1600 Series is a Grade 1 heavy duty aluminum storefront closer with tri-style mounting, and the Cal-Royal 500S is a Grade 1 barrier free closer with adjustable back-check. Tri-style or tri-pack mounting means the same unit can be set up regular, top jamb or parallel arm at the opening.

One finish only: 689 aluminum painted. That is the standard sprayed aluminum look that blends with most aluminum storefront and hollow metal frames, so it will match closers and arms already finished in 689 elsewhere in the building. If your other openings are specified in a plated finish like 690 or 630, this arm will not visually match them.

Commercial. The A45-505S is a heavy duty arm set for Stanley Security D3550 Series surface mounted closers and is catalogued for commercial use, which is what you want on school corridors, retail entries, multi-family common doors, and other high cycle openings where a light duty arm gets bent.