Rockwood 491-RKW Automatic Door Holder and Stop, 1/2" Clearance or Less Door to Floor

A floor stop only stops the door before it hits a wall. The 491-RKW is a two-piece automatic holder and stop: a body and a floor strike that catch the door and hold it open where it lands, which is what you want on a door that gets held open on a frequent basis. That extra function costs you a strike fixed in the floor at the hold point. If nobody needs the door held open, a plain dome or bumper stop does the job with far less on the floor: the Ives FS13 heavy-duty brass floor dome stop with replaceable rubber bumper, or the Emtek 2254 floor door bumper at 1-3/8 by 1-1/4 inches. If you want hold-open without a separate strike plate, the Orca Hardware 22HD Series gooseneck floor stop is listed as a door holder for 1-3/8 or 1-3/4 inch doors.

The 491-RKW carries ANSI A156.16, type number L01301, which is the auxiliary hardware standard and the type designation a hardware schedule uses to call out this exact kind of automatic holder with stop. It is a commercial item, cast brass, so it answers a spec written for institutional openings. If the schedule lists L01301 by number, the 491-RKW matches that line.

The Rockwood 491-RKW automatic door holder and stop is set up for a door to floor clearance of 1/2 inch or less, and Rockwood offers strike risers to take up larger clearances on that same body. Where the gap varies from opening to opening and you would rather adjust the device than stock risers, the Ives FS40 / FS41 / FS42 / FS43 automatic floor stop and holder covers adjustable door to floor clearance across its model range. Both are automatic hold open devices for the floor, so the deciding factor is how the clearance is taken up: a riser under the Rockwood strike, or the adjustment built into the Ives family.

Fasteners come in the box for both halves. The strike gets three #12 x 1-1/4 inch flat head wood screws plus three plastic anchors, and the body gets four #10 x 1-1/4 inch flat head wood screws. The plastic anchors are what let the strike land on a concrete or masonry floor rather than only into wood, so a slab is covered with the hardware supplied. Screw holes are laid out so you can set the holder and strike, check the alignment with the door swung to the hold position, and then fasten permanently.

A magnetic holder. The SOSS MDH magnetic door holder and stop, 3-5/16 by 1-3/4 inches, holds the door with a magnet, so the door pulls free without anyone working a mechanism at floor level. The Rockwood 491-RKW is the mechanical answer instead: body plus floor strike, built for doors held open frequently, and it stays put until it is released. Pick the magnet where you want an easy break-away, pick the 491 where you want the door to stay where it was put.

Buy a bumper or dome stop and skip the strike in the floor. The Deltana UFB4505 round universal floor bumper is 1-1/2 inches in solid brass, the UFBS138 is the 1-3/8 inch square version, and the UFBD3505 is a 3-1/2 inch decorative round. Emtek covers the same ground with the 2257 cylindrical floor bumper at 1-1/2 inches and the 2251 half dome stop. Ives FS17 is the heavy-duty brass dome stop with a rubber bumper. Any of them protects the wall for less hardware on the floor; the Rockwood 491-RKW is only worth the strike and the two-piece install if you actually need the door to stay open.

For openings where the stop itself gets attacked or kicked, the Ives FS18S/FS18L security floor stop is a heavy duty unit built for that duty. The Rockwood 491-RKW is a cast brass automatic holder and stop meeting ANSI A156.16, L01301, used in institutional buildings including detention, offices, retail, educational, sports facilities, and hotel and restaurant work, and it is the choice when the door has to be held open frequently. If the requirement is a hardened stop rather than hold open, the Ives security floor stop covers it; if the requirement is repeated hold open on a commercial opening, the 491-RKW is the automatic holder.

No, those are bumpers rather than holders. The Deltana UFB4505 is a 1-1/2 inch round universal floor door bumper in solid brass, the Deltana UFBS138 is a 1-3/8 inch square universal floor door bumper in solid brass, the Emtek 2257 is a 1-1/2 inch cylindrical floor bumper, and the Emtek 2254 is a floor door bumper measuring 1-3/8 inches by 1-1/4 inches. Each one arrests the swing of the door where it lands. The Rockwood 491-RKW is an automatic holder and stop intended for openings that need the door held open on a frequent basis, which is why it ships with a door strike and its own fasteners for both pieces. If a spec calls for hold open, a floor bumper will not satisfy it.

Two: 626 satin chrome and BSP black suede powder coat. Satin chrome is the one that lines up with the 626 levers, closers, and push plates already on most commercial openings, so it is the pick when you are standardizing a building. Black suede powder coat is the choice on dark frames and storefront. Underneath either finish the casting is brass.

The Ives FS13 is a heavy duty brass floor dome stop with a replaceable rubber bumper, so the wear part comes off the base; the Ives FS17 is the heavy duty brass floor dome stop with rubber bumper. Both are stops. The Rockwood 491-RKW is a cast brass automatic holder and stop whose two pieces mount with supplied fasteners, strike with 3 each #12 x 1-1/4 inch flat head wood screws and 3 plastic anchors, body with 4 each #10 x 1-1/4 inch flat head wood screws, so a service call on the Rockwood is at the anchor and screw level rather than a tip swap. For a fleet where doors are stopped hard and often, the FS13 wear part is the maintenance angle; for doors that must stand open, the 491-RKW is the holder.

The Rockwood 491-RKW is cast brass, offered in 626 satin chrome and black suede powder coat, and it is an automatic holder and stop for commercial openings, including hotel and restaurant work. On the decorative side, the Deltana UFBD3505 is a 3-1/2 inch round universal floor bumper in solid brass with a decorative treatment, and the Deltana UFBP4505 is a 1-5/8 inch round universal floor door bumper with a pattern cap in solid brass. The Deltana units give a finished brass face at the floor and stop the door; the Rockwood pair gives a plated or powder coated brass body and strike that hold the door open where housekeeping or service traffic needs it standing.