Rockwood 517 3-3/4" Aluminum Rigid Door Stop Aluminum Finish

That is exactly what the 517 is for. It mounts on the baseboard, not the floor, and projects 3-3/4 inches off the wall to catch the door before the lever or panic hardware makes contact. Cast aluminum body with a rubber bumper on the strike face. If your lever or push bar sticks out further than 3-3/4 inches from the door face when the door swings open, measure first, because the stop has to reach past the trim to do its job.

Not necessarily. The Rockwood 517 is a fixed 3-3/4 inch projection, so the gap between your baseboard and the door in the open position has to be roughly that distance. If it is deeper or shallower, an adjustable baseboard stop suits better: the Delaney solid brass baseboard stop adjusts from 3-1/2 to 4-1/2 inches, and the Hager 212 is an adjustable rigid stop with an 80 to 120 degree range. Measure from the finished base to the point on the door that will make contact before you order a fixed-projection stop.

The Rockwood 517 stops the door and releases it; it does not hold the leaf open. For a door that has to stand open on its own, the Orca Hardware TH-30HD is a heavy duty rigid door stop whose function is a door holder, so it catches and retains the leaf. Buyers doing corridors and loading areas often mix the two, using a plain stop where the door should swing back closed and a holder where it needs to stay put.

The Rockwood 517 is a rigid baseboard-mounted stop with a 3-3/4 inch projection in cast aluminum. If the door swings further before it should be caught, the Delaney 40201X solid brass baseboard door stop adjusts from 3-1/2 to 4-1/2 inches, and the Emtek 2231 baseboard door stop is a fixed 4 inch. All three mount to the baseboard and take the door on a bumper the same way; the difference is how far off the wall the strike point sits and whether that distance is fixed or adjustable.

The Rockwood 517 is a baseboard stop and depends on a baseboard to receive its two #8 x 3/4 inch oval head sheet metal screws. Where there is no baseboard, a floor-mounted stop is the usual answer: the Delaney 4029XX is a 2 inch high round solid brass floor bumper that anchors to the floor instead of the wall. Check the floor covering and the door's swing arc before committing, since a floor bumper sits in the walking path where a baseboard stop does not.

They stop the door at a similar distance but they are not the same part. The Rockwood 517 is a rigid cast aluminum stop, so the arm does not flex when the door hits it. The Orca TH-3134 is a 3-3/4 inch spring door stop, a coil type that absorbs the swing by deflecting. The Orca TH-3118 is the same spring style at 3-1/8 inch. On a heavy commercial door where you want the leaf to stop dead at a fixed point, the rigid stop and the spring stop behave differently even at matching projection.

Two #8 x 3/4 inch oval head sheet metal screws ship with the 517. That length is sized for fastening into wood baseboard or trim. On masonry, metal stud, or hollow wall where there is no solid backing behind the base, you will need to supply your own anchors, since 3/4 inch screws alone will pull out of drywall under a door being thrown open.

A baseboard stop like the Rockwood 517 mounts on the wall base and keeps the floor clear, which matters in corridors, patient rooms and anywhere carts or mops run. It needs solid baseboard or blocking to anchor into and it only works when the door swings close enough to the wall to reach it. A floor bumper, like the Delaney 2 inch round solid brass floor bumper, anchors into the slab or subfloor and works when the door opens away from any wall, but it becomes a trip and a mop obstacle. Deep-set doors in a thick wall reveal are usually a floor stop; a door swinging flat against a finished wall is a baseboard stop.

Commercial. The 517 is a cast aluminum stop specified for institutional and commercial work, the sort of thing that goes into offices, schools, detention, hotels, sports facilities and restaurants. For a facility standardizing across many openings, it is a one-piece rigid part with two fasteners, which is about as low-maintenance as a stop gets.

Rigid versus spring is about how the stop takes the hit. The 517 is a solid cast aluminum arm with a rubber bumper, so the door stops dead where it stops, which is what you want when the point is protecting the wall and the lever. A spring stop, such as the Orca Hardware 3-3/4 inch spring stop, flexes on impact and gives a little instead of transmitting the whole load to the wall anchor. On high-traffic doors that get thrown open, the spring version is easier on the substrate; where you want the door held to a precise open position, rigid is the one.

Both are baseboard stops. The Rockwood 517 is cast aluminum in burnished aluminum finish with a 3-3/4 inch projection and comes with its two mounting screws, and it is specified for commercial and institutional openings. The Emtek 2231 is a 4 inch baseboard door stop, so it reaches a quarter inch further off the base. If you are matching a projection on existing openings, that quarter inch is the deciding number.

The Rockwood 517 has a fixed 3-3/4 inch projection, so the angle at which the door is caught is set by where you mount it. The Hager 212 is an adjustable rigid door stop with an 80 to 120 degree range, so the stopping angle can be dialed in after mounting. On a retrofit where the existing screw holes are not where you want them, the adjustable body gives you room to land on the angle you need without moving the anchors.

The Rockwood 517 is specified for commercial use, in cast aluminum with a rubber bumper. On the residential side of the same job, the Emtek 2231 is a 4 inch baseboard door stop and the Delaney 40201X is a solid brass baseboard stop adjustable from 3-1/2 to 4-1/2 inches. Both mount to the baseboard like the 517 and are commonly chosen where the trim package is brass or decorative rather than institutional.

The Rockwood 517 covers the standard case: baseboard mounted, rigid, 3-3/4 inch projection, two #8 x 3/4 inch oval head sheet metal screws into the base. Three gaps typically remain. Where the door must stay open, the Orca TH-30HD is a heavy duty rigid stop that functions as a door holder. Where there is no baseboard, the Delaney 4029XX 2 inch round solid brass floor bumper mounts to the floor. Where the stopping angle has to be tuned per opening, the Hager 212 adjusts across an 80 to 120 degree range. That set handles most of what a mixed-age building throws at a stop schedule.

The 517-ALM comes in burnished aluminum, which is the mill-look silver finish that reads neutral against most painted base. The rubber bumper is standard white, with gray and black offered as options. If you are matching existing stops in a building, the bumper color is the part people notice, so it is worth confirming which one is on the doors you already have.

Cast aluminum is the standard commercial choice and it is what the Rockwood 517 uses, with the rubber bumper taking the repeated impact rather than the metal. It will not tarnish the way an unlacquered brass part does, which is why it turns up in schools and healthcare corridors. Where the spec calls for solid brass, the Delaney baseboard stop is the brass equivalent. In either case the anchor into the base is what usually fails first, not the stop, so solid blocking behind the baseboard does more for longevity than the metal choice.