Stanley Security D-3550 Plastic Cover, Aluminum Painted

Yes. Three mounting positions are covered: surface hinge (pull side) mount, top jamb mount on the push side, and parallel arm mount on the push side. That gives you a way to hang it whether the door swings into or out of the room, which matters when the frame face or a transom blocks the obvious position.

Yes, it is listed as ADA compliant. For an accessible opening that still means setting the spring power and closing speed at install so the opening force at the door stays within the limit for that door type; the closer allows it, the adjustment on the job confirms it.

It uses all-weather hydraulic fluid, so the closing speed does not swing wildly between a January morning and an August afternoon. That is what you want on a perimeter door, a vestibule, or an unheated stairwell. It is a commercial-rated product, not a residential-duty closer.

Look at closers specified with a hold open arm. The Accentra 51 Series is an industrial closer with hold open and tri-packed mount options in sizes 1-6, and the Orca Hardware BHDC1958HO/PA is a hold open door closer with a parallel bracket for 1-3/4 inch doors. If a non-hold-open arm is what you want, the Accentra 1101BF and 2701 Series are both specified as tri-packed non-hold open.

Often, yes, and it depends on your top rail and frame. Parallel arm mounting on a shallow top rail usually needs a mounting shoe or drop plate, and a soffit with a deep reveal needs a bracket sized to that reveal. Accessory parts stocked alongside these closers include parallel arm mounting shoes, a flush panel adaptor for parallel arm applications, and blade stop spacers for clearance. Measure your reveal and top rail height before ordering the arm accessories.