Dorma MOD SPAT Heavy-Duty Parallel Closer Arm, with Thumb Turn Hold Open, (Super Parallel Arm), Aluminum Painted

The MOD SPAT is a heavy-duty parallel arm (Dorma calls it the Super Parallel Arm) for a commercial door closer, with a thumb turn hold open built into the arm. Turn the thumb piece while the door is open and the arm holds the door in that position until you release it. It's sold as a replacement part, so it swaps onto an existing closer body rather than being a complete closer.

Arm only. The MOD SPAT is catalogued as a replacement closer arm, so you are buying the parallel arm assembly with the thumb turn hold open, not a closer body, shoe-mounted cover or full closer package. If your closer body is worn or leaking, the arm won't fix it.

No. A mechanical hold open arm like the MOD SPAT thumb turn defeats the self-closing requirement for a fire door, so it does not belong on a fire rated opening. Fire doors need either a plain non-hold-open arm or an electrified hold open tied to the alarm so it releases. Use the MOD SPAT on non-rated openings such as vestibules, offices and storefront entrances where holding the door back is wanted.

Three: 689 anodized aluminum (painted aluminum, the standard look), 693 black, and 695 dark duranodic bronze. Pick the one that matches the closer body already on the door, since a mismatched arm is the first thing anyone notices on a storefront or corridor opening.

A parallel arm mounts the closer on the pull side of the door with the arm running back along the face of the door, which keeps the arm tight to the door and out of the traffic path. That's the usual pick for corridors, schools and any opening where a projecting regular arm would get grabbed or abused. A regular arm mounts on the push side and projects perpendicular to the door, gives more efficient closing power, but sits exposed. The MOD SPAT is the heavy-duty parallel version, so it suits high-traffic commercial openings.

The MOD SPAT is the Dorma Super Parallel Arm, model MOD SPAT 689 in the aluminum painted finish, so it is specific to Dorma closer bodies that accept that arm. Match the arm to the closer series you already have on the doors before you order a batch, then pick a single finish across the building so the openings look the same.

No, it's a commercial part. The Super Parallel Arm is the heavy-duty arm in the Dorma line, intended for commercial door control rather than light residential closers. If you're servicing a house door with a small residential closer, this arm is the wrong scale.