Orca Hardware 5.275" Kick Down Door Holder

Kick down holders work by friction: you kick the arm down and the shoe presses against the floor to hold the door. On hard surfaces like tile, vinyl, sealed concrete, and wood, the TH-40ST holds well. On thick or plush carpet, a kick down of this style has less to bite against and can creep. If your openings are carpeted, the Ives FS455 uses a non-marring rubber shoe on a 4 inch extension, which gives more reach down to the floor surface.

The TH-40ST is a zinc alloy body rated by Orca for commercial use, which covers office suite doors, interior corridor doors, and multi-family unit doors. For a heavy exterior entry, a storefront door, or anything that sees constant traffic and abuse, step up to a heavy duty unit: the Ives FS452 with a stainless steel spring or the FS455A in satin aluminum are both heavy duty kick down holders.

No. Orca lists the TH-40ST as not ADA compliant. On an accessible route a floor-mounted holder in the down position becomes a protruding object and it takes a foot to operate, so it will not satisfy an accessibility review. For ADA-sensitive openings, look at an overhead holder or a magnetic hold-open tied to the fire alarm instead.

No. A fire door has to self-close and latch, so any device that mechanically props it open defeats the rating. The TH-40ST is a mechanical kick down holder and does not belong on a labeled opening. Where a fire door needs to stand open, the code-accepted route is an electromagnetic hold-open released by the fire alarm.

No - a kick down holder is the wrong part for that job. The Orca TH-40ST, the Delaney 40280X, and the Ives FS452, FS455, and FS455A are all kick down holders: they mount on the door face and are kicked down to hold the door open against the floor. They do not stop the door before it strikes the wall or the adjacent casing. If your problem is a lever gouging drywall, you want a wall stop or a floor stop mounted at the strike point, and you can run it alongside a kick down holder on the same door.

The Delaney 40280X is the nearest match in form and function - it is a kick down door stop/holder in a satin chrome US26D finish. The Orca TH-40ST is a kick down door holder in zinc alloy, offered in oil-rubbed bronze, brushed chrome, and satin nickel. If you are matching an existing satin chrome opening and want a single finish, the Delaney covers it; if you are matching bronze or satin nickel trim across a set of doors, the Orca finish range is where you will find it.

Step up to the Ives FS452, FS455, or FS455A - all three are rated heavy duty. The Orca TH-40ST is a zinc alloy kick down holder. For a stairwell door, a loading dock, or a corridor door that gets held open dozens of times a day, the heavy duty Ives units are the ones specified for that service; the FS455 is brass with a non-marring rubber shoe, and the FS455A is satin aluminum.

Zinc alloy is the TH-40ST body material, and it holds up fine indoors. In a wet or coastal exterior location the plated finish is what wears first, and once it does the castings pit. For exterior openings the Ives FS455 is a brass kick down holder, which handles weather better than plated zinc.

Not a drop-in. Kick down holders mount to the face of the door with their own screw pattern, and the Orca 40ST body is not dimensioned to reuse Ives FS452 or FS455 holes. Expect to fill and redrill. If you want to keep the existing prep, replace like for like with the same Ives model you already have.

Material and finish. The FS455 is brass and includes a 4 inch extension with a non-marring rubber shoe; the FS455A is satin aluminum with a 4 inch extension. Both are heavy duty. If you are matching brass or bronze door trim, the FS455 is the one; for aluminum storefront and hollow metal openings where satin aluminum is the standing finish, the FS455A matches the rest of the hardware.

The Orca TH-40ST is not ADA compliant, so it is not the part for an opening being held to an accessible route requirement. Where the ADA obligation is the driver, verify the specific holder against your accessibility scope before you commit - and note that on a fire rated opening a hold-open device of any kind is generally not permitted at all, which is the more common reason a kick down gets rejected on an institutional job.

The Orca TH-40ST is classified for commercial use and is built in zinc alloy. For openings where the duty cycle is the deciding factor - a busy corridor, a service entry, doors held open through a full shift - the Ives FS452, FS455, and FS455A are the heavy duty options in the same kick down format.

One per leaf. Each kick down holder acts on the door it is mounted to, so a pair of doors that both need to stand open takes two. Order the TH-40ST in the same finish for both leaves so the pair matches.