Rockwood 406 Convex Wrought Wall Stop, 1" Projection, 2-1/2" Diameter, Plastic Toggle Fastener

The 406 ships with #8 x 1-1/4 inch truss head sheet metal screws and a plastic toggle, so it can go into hollow drywall without blocking behind it. The toggle spreads the load behind the wallboard; if you happen to hit a stud or solid backing, use the screw alone. Its back plate sits between the bumper and the wall to keep the stop from chewing up the finish surface.

Convex. The rubber bumper on the 406 domes outward, which is what you want when the door itself strikes the stop flat, the usual case for a lever or knob that clears the wall. A concave bumper is the one you use when a round knob needs to seat into a cupped face, and for that Delaney's 2-1/4 inch concave wall bumper is the concave option. Picking the wrong profile means the door hits the edge of the bumper instead of the center of it.

It carries ANSI A156.16, L02101, which is the BHMA standard for auxiliary hardware with the type code for a wall bumper. That is the number to write on the submittal. It is a commercial-grade item, not a residential one, and Rockwood lists it as accepted by the New York State Office of Mental Health for use in high risk areas.

Rockwood lists the 406 as accepted by the New York State Office of Mental Health for use in high risk areas, and the concealed mounting is the reason: there is no exposed screw head or gap to pick at or use as a ligature point. Rockwood hardware is normally specified in institutional buildings including detention and education facilities. That OMH acceptance is the line to quote on a behavioral health submittal.

The Rockwood 406 is a convex wrought wall stop with a 1 inch projection and a back plate that protects the wall, mounted with #8 x 1-1/4 inch TH SMS and a plastic toggle. The nearest heavy duty peers are the Ives WS11 heavy duty wall stop with replaceable rubber bumper for drywall and masonry, and the Ives WS33/WS33X heavy-duty wall door stop with replaceable rubber bumper. Both are rated heavy duty and both carry a replaceable bumper, so a facility that wants to change bumpers rather than whole stops over a long service life has a direct path there. The 406 differs in that it is the convex wrought profile with concealed mounting, which is the look most institutional specs call for on a finished wall.

The 406 is a wall stop only. It arrests the door at 1 inch of projection off the wall and lets it swing back; nothing holds it. For an opening that has to stand open, the Ives WS20 is a manual wall holder with a hinged strike for drywall and masonry, so the door is caught by hand at the wall and released by hand. The Ives WS40 is an automatic wall holder with a heavy duty bumper pad, which catches the door as it swings without anyone reaching for the strike. Holders need a strike on the door leaf, which a plain stop like the 406 does not, so the door prep is different.

No. The 406 is the convex profile: the bumper crowns outward, so the door face meets a rounded high point. The Delaney 2-1/4 inch concave wall bumper is dished the other way, cupping the door edge or a projecting knob rather than presenting a crown. Concave bumpers are the usual answer when a lever or knob is what strikes the wall and needs to seat into the bumper; convex is the usual answer when the door face itself is doing the striking. Confirm what actually contacts the wall before swapping one profile for the other, because the two are not interchangeable on the same opening.

The Rockwood 406 carries ANSI A156.16, L02101 and is a commercial part, so it answers a submittal that calls that designation out directly. Among the peers, the Ives WS11 and Ives WS33/WS33X are both heavy duty wall stops with replaceable rubber bumpers and are the usual alternates offered when a specifier will accept an equal. The 406 is also accepted by the New York State Office of Mental Health for use in high risk areas, which matters on behavioral health and detention work where a stop has to be more than a bumper.

Six finishes: 605 bright brass, 606 satin brass, 613E oil rubbed bronze equivalent, 625 bright chrome, 626 satin chrome, and 630 satin stainless. Those are standard BHMA finish codes, so 626 will read against satin chrome levers and 630 against satin stainless the same way it does on the rest of the opening. For a building already standardized on one code, order the stop in the same number and it matches across the fleet.

A wall stop like the 406 is the right call when the door swings into open wall and the wall face is within reach of the door's arc, since nothing sits in the walking path to trip over or catch a mop. It needs solid or toggle-anchorable wall at the exact strike point, and its 1 inch projection has to be enough to keep the lever off the wall. Where the door swings past the end of a wall, or opens into a corridor with nothing behind it, a floor-mounted stop is the one that works. Delaney's rigid and spring door stops are base-mounted alternatives.

The 406 stops the door and nothing else. There is no catch in it. If you need the leaf held open, for a moving crew, a loading area, or a classroom door you want parked back, you want a wall holder: the Ives WS20 is a manual holder with a hinged strike, and the Ives WS40 is an automatic holder with a heavy duty bumper pad. Holders need a strike plate mounted on the door edge or face, so they are more prep than a plain bumper.

It is a cast brass body, commercial rated, with an ANSI A156.16 L02101 listing and OMH acceptance for high risk areas, which is a fair read on a stop that takes abuse. If your spec calls out heavy duty by name, the Ives WS11 and Ives WS33 are both listed as heavy duty wall stops with replaceable rubber bumpers, and a replaceable bumper is worth considering on an opening where the rubber is the part that wears out first.

Fasteners are in the box: #8 x 1-1/4 inch truss head sheet metal screws with a plastic toggle. For a drywall wall you have what you need. Masonry, tile, or CMU is the exception, since a plastic toggle needs a hollow cavity to spring open in, so plan on a sleeve or lead anchor sized to the #8 screw for a solid substrate.

A wall stop like the Rockwood 406 needs backing to fasten to, which is why it ships with a plastic toggle for hollow wall. Where the door swings past the wall entirely or the wall cannot be drilled, the stop moves to the floor or the door. The Delaney 3 inch HD rigid door stop and the Delaney 3 inch spring door stop are the two shapes used there: rigid for a fixed post that takes the load head on, spring for a flexing shaft that absorbs the swing. Both put the arrest point at the base of the opening instead of on the wall face.

The Rockwood 406 is a commercial wrought stop built for institutional buildings, offices, retail, educational, detention, sports facilities, hotels and restaurants. For a residential-scale or decorative opening, the Emtek 2255 brass wall bumper mounts with a regular rosette, which reads as a trim ring at the wall rather than the concealed-mount wrought plate of the 406. The 406 keeps its fasteners hidden and puts a back plate behind the bumper to protect the wall; the Emtek presents the rosette as part of the finished look.

They are not the same part. The Rockwood 406 is a wall stop that arrests the door at 1 inch of projection and carries the ANSI A156.16 L02101 designation for commercial work. The Ives WS40 is an automatic wall holder with a heavy duty bumper pad and is rated light duty, and its job is to catch and hold the door open rather than simply stop it. Ordering a WS40 to replace a 406 changes the behavior of the opening, because the door will stay put instead of swinging back closed.

Cast brass with a rubber bumper. Cast brass takes the brass and bronze finishes, 605, 606, and 613E, as a plated or applied finish on real metal rather than a coating over pot metal, and it holds up where a door slams into it daily. The rubber bumper is the wear surface.

The Rockwood 406 ships with #8 x 1-1/4 inch TH SMS and a plastic toggle, the toggle being the hollow-wall anchor. Among the peers, the Ives WS11 heavy duty wall stop and the Ives WS20 manual wall holder are both offered for drywall and masonry applications, so a single model number can follow a corridor from stud partition through block wall. Standardizing on one stop across a facility means matching the wall construction as well as the finish, and the 406 runs six finishes including 626 satin chrome and 630 satin stainless to match what is already on the other doors.