Rockwood 458 Kick Down Door Stop

Yes. The 458 uses replacement bumper No. 461B, so a worn or missing rubber foot does not mean replacing the whole holder. That matters on a fleet of doors, where the bumper is the only part that wears and the cast zinc body outlasts several of them.

No. A fire door has to be free to self-close and latch, so a hold-open device that props it is not permitted on a rated opening. Use the Rockwood 458 on non-rated doors, and specify an electromagnetic hold-open tied to the fire alarm on anything rated.

The Rockwood 458 is a cast zinc kick down door stop with a 4 inch projection and a rubber bumper that grips the floor. The Ives FS455 is a brass kick down door holder with a 4 inch extension and a non-marring rubber shoe, which matches the 458 on both reach and the rubber floor contact. The Ives FS455A covers the same 4 inch kick down function in satin aluminum. If the opening already has a 458 on one leaf and you are adding a second, matching the 4 inch projection is what keeps both leaves holding at the same door swing.

The Rockwood 458 drops 4 inches from the door, which suits a normal undercut. Where the door bottoms out higher above the finish floor, such as over thick carpet or a recessed mat, the Orca Hardware 40ST Series kick down door holder reaches 5.275 inches and closes that gap. Measure from the fastener line on the door face down to the floor before you pick, because a kick down that cannot touch the floor will not hold the leaf.

The Rockwood 458 kick down door stop is offered in bright brass, BRS, and bright chrome, CRM, both of which are polished rather than brushed. If the openings are already standardized on a brushed finish, the Delaney kick down door stop and holder is supplied in satin chrome US26D, which is the brushed equivalent buyers usually mean when they say satin chrome. On a fleet of doors, pick the one that matches the hinges and levers already hanging, because a polished foot next to brushed trim reads as a mismatch from down the hall.

The Rockwood 458 is a commercial kick down door stop certified to ANSI A156.16 under type number L01382, which is the citation a specifier or a facilities standard usually asks for by name. Among the alternatives, the Ives FS452, FS455, and FS455A are all rated heavy duty. When the submittal calls out an ANSI A156.16 type number rather than a duty description, the 458 answers it directly.

It depends on your gap. The 458 drops 4 inches from the door face, so it works over carpet as long as the undercut plus carpet pile still leaves the bumper contacting the surface with pressure on it. The rubber foot grips the floor rather than digging in, which is how it holds on hard surfaces and low pile alike. On a door with an unusually tall undercut, the Orca Hardware 40ST Series holder is longer at 5.275 inches.

Three #8 x 1 inch oval head sheet metal screws ship with the 458. Those are the right fastener for hollow metal, where the screw threads into the door skin. On a solid wood door they will bite fine as well. If you are mounting to an aluminum stile or anything where a 1 inch sheet metal screw has nothing to grab, plan on your own machine screws and tapped holes, since only the three SMS are supplied.

Two finishes: BRS bright brass and CRM bright chrome. Bright brass lines up with polished brass lever and hinge trim; bright chrome matches polished chrome. If your building is standardized on satin chrome or satin aluminum instead, the Delaney kick down stop is offered in satin chrome US26D and the Ives FS455A is a satin aluminum kick down holder.

Closest cross-brand equivalents ZenSupply carries are the Ives FS455, a brass kick down holder with a 4 inch extension and non-marring rubber shoe, which is the nearest match to the 458's 4 inch projection and rubber bumper, and the Ives FS455A in satin aluminum. The Ives FS452 is another heavy duty kick down holder, built with a stainless steel spring. The Orca Hardware 40ST Series holder runs a longer 5.275 inch body if you need more reach.

No. The Rockwood 458 mounts on the face of the door and pivots down to the floor, holding the leaf open where you set it, and it fastens with three #8 x 1 inch oval head sheet metal screws into the door. A floor mounted stop is anchored into the slab and only arrests the swing. If what you need is the door to stay open on its own, the kick down family is the right one, which also includes the Ives FS452, the Ives FS455, the Ives FS455A, and the Orca Hardware 40ST Series. If you only need to protect the wall, a kick down is the wrong part and drilling the slab is not required.

The Rockwood 458 is cast zinc with a replaceable rubber bumper, part number 461B, so a worn foot is a parts swap rather than a new holder. The Ives FS452 is a heavy duty kick down door holder built with a stainless steel spring. On a high traffic corridor door in a school or hospital where the holder gets kicked down and up all day, the spring material and the duty level are the deciding detail; on a door where the foot wears against grit, the replaceable 461B bumper is.

No handing to specify. The 458 is a face-mounted kick down holder with a 1-5/8 x 1-7/8 inch footprint, so the same part goes on a left or right hand door. It mounts on the push face near the bottom of the lock stile, clear of the door bottom, and is kicked down with a foot to engage. Order only the finish.