Cal-Royal 4CWS-21 Commercial G...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$23.32
Cal-Royal Cal-Royal 4CWS-21 Commercial Grade Wall Door Stop For High Traffic Conditions Solid Cast Brass CAL-4CWS-21

Cal-Royal 4CWS-21 Commercial Grade Wall Door Stop with Solid Cast Brass Construction

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Model: 4CWS-21-US26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$23.32
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Cal-Royal 4CWS-21 Commercial Grade Wall Door Stop with Solid Cast Brass Construction

The Cal-Royal 4CWS-21 is a commercial grade wall door stop engineered for high traffic conditions in both indoor and outdoor applications. Constructed of solid cast brass, this wall-mounted stop features an overall projection of 3 5/8" and a base diameter of 2 1/8", providing reliable door control for demanding commercial environments. A rubber tip protects door surfaces from scarring or marking, while three mounting holes and included mounting hardware ensure a secure, versatile installation across all wall construction types.

Key Features

  • Overall Dimensions: Overall projection of 3 5/8" with a base diameter of 2 1/8" for reliable door stopping performance.
  • Heavy-Duty Construction: Solid cast brass body designed for commercial grade durability in high traffic conditions.
  • Rubber Tip Protection: Rubber tip does not scar nor mark the surface of the door, preserving door finish over repeated use.
  • Mounting Configuration: Features 3 mounting holes for a secure, stable wall installation.
  • Included Hardware: Includes mounting hardware suitable for all wall construction applications, simplifying installation.
  • Indoor and Outdoor Use: Rated for both indoor use and outdoor use, offering flexibility across a wide range of building entry points.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Stops, Holders, Silencers & Bumpers
  • Product Type: Door Stops - Wall
  • Subcategory: Door Stops, Holders, Silencers & Bumpers
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Cal-Royal 4CWS-21?

Cal-Royal wall door stop products deliver professional-grade reliability with solid cast brass construction built to withstand high traffic commercial conditions. The rubber tip design protects door surfaces while included mounting hardware ensures dependable, secure performance across indoor and outdoor installations alike.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Stops, Holders, Silencers & Bumpers
Product Type:
Door Stops - Wall
Commercial/Residential:
Commercial
Subcategory:
Door Stops, Holders, Silencers & Bumpers
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal 4CWS-21-US26D – Frequently Asked Questions

1) Will a Cal-Royal 4CWS-21 wall stop mount on drywall, or does it need masonry or a stud?
Mounting hardware comes in the box, and it is supplied for all wall construction applications, with three mounting holes in the 2 1/8 inch base. Three holes spread the load rather than hanging the stop on a single fastener, which is what matters on hollow drywall. Best practice on any wall stop is still to land it on blocking or a stud where you can, since a door driven hard into a stop is putting all that force into the wall.
2) Should I use a wall stop or a floor stop behind a commercial door?
A wall stop like the 4CWS-21 catches the door at the wall, so nothing sits in the walking path and nothing gets caught by a mop or a cart. It only works if the door actually swings to a wall within 3 5/8 inches of projection. Where the door swings into open space, into a corner it cannot reach, or against a glass or partition wall you cannot fasten to, a floor stop is the right call instead. ZenSupply carries floor and hinge-mounted alternatives, including the Delaney 3 inch HD rigid door stop and the Delaney 3 inch spring door stop.
3) I need the door to stay open, not just stop. Is the 4CWS-21 the right part?
No. The 4CWS-21 stops the door and lets it swing back; it has no catch or hold-open. For a door that needs to be held open, at a corridor, a dock, or a room being aired out, you want a wall holder. The Ives WS20 is a manual wall holder with a hinged strike that mounts to drywall or masonry, and the Ives WS40 is an automatic wall holder with a heavy duty bumper pad. Buy the holder for hold-open and the stop for wall protection; they are not the same job.
4) My door needs more than 3-5/8 inches of standoff to clear the lever. What wall stop should I order instead?
Where the lever, pull, or panic push bar sticks out past what a 3 5/8 inch projection can catch, you need a longer stop. The ABH RM Series and RMS Series wall door stops are offered in multiple length options for exactly that condition. Measure from the finished wall to the highest point of the trim with the door open and pick a length that reaches past it, otherwise the lever hits the wall before the stop does and you get a hole in the drywall.
5) Is a wall bumper the same thing as the Cal-Royal 4CWS-21 wall door stop?
They serve the same opening but they are built differently. The 4CWS-21 is a projecting stop in solid cast brass, 3 5/8 inches out from the wall on a 2 1/8 inch base, so it catches the door before the lever or edge reaches the wall. A wall bumper such as the Emtek 2255 brass wall bumper with regular rosette or the Delaney 2-1/4 inch concave wall bumper sits close to the wall surface and takes the impact of the door face or knob directly against a pad. Use the bumper where the door or knob already reaches the wall and you only need to protect the drywall; use the projecting stop where you need to arrest the swing short of the wall.
6) What is the closest equivalent to the Cal-Royal 4CWS-21 wall door stop from another brand?
The nearest straight equivalents 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. All three are wall-mounted stops with a rubber bumper face that keeps the door leaf off the wall. The difference that decides it: the 4CWS-21 is solid cast brass with a 3 5/8 inch overall projection, a 2 1/8 inch base diameter and three mounting holes, with a rubber tip that does not scar or mark the door. The Ives WS11 and WS33 bumpers are described as replaceable, so if you are maintaining a large door count and want to renew the strike face without pulling the base off the wall, that is the point to weigh.
7) The wall behind the door is further back than a standard stop reaches. What should be used instead of the 4CWS-21?
The 4CWS-21 has a fixed overall projection of 3 5/8 inches, so it only works where the door leaf comes within that distance of the wall. Where the gap is deeper, the ABH RM Series and ABH RMS Series wall door stops are offered with multiple length options, which lets the projection be matched to the actual standoff rather than shimmed out with blocking. Measure from the finished wall to the point on the door face that the bumper will contact, at the door's full swing, and pick the length from that.
8) The door needs to be held open, not just stopped. Does the 4CWS-21 do that?
No. The Cal-Royal 4CWS-21 is a wall stop with a rubber tip that arrests the door and protects the door face; it does not retain the leaf in the open position. For hold-open at the wall, the Ives WS20 manual wall holder uses a hinged strike, so the person opening the door engages it deliberately, and the Ives WS40 automatic wall holder catches the door on a bumper pad as it swings in. A common facility approach is the 4CWS-21 on the doors that only need to be stopped and a holder on the loading, receiving and corridor openings that get propped anyway. Note that hold-open devices are not appropriate on rated openings that must remain self-closing and latching.
9) Can a cast brass wall door stop be used on an exterior door?
The 4CWS-21 is rated for outdoor as well as indoor use, and the solid cast brass body is the reason: brass does not rust the way a plated steel stop will at an exterior opening. That makes it usable behind entry doors, loading dock doors, and courtyard openings, not just interior corridors.
10) What finishes does the Cal-Royal 4CWS-21 come in, and how do I match it to the rest of my door hardware?
Two finishes: 26D satin chrome and US10B antique bronze oiled. 26D is the standard commercial finish and matches satin chrome or satin stainless levers, closers, and hinges on most office and institutional openings. US10B is the dark oil rubbed bronze look, for openings already trimmed in bronze. Both are sold in packs of 10, which is the practical way to buy them when you are stopping a whole floor of doors at once.
11) Is the Cal-Royal 4CWS-21 heavy duty enough for a school or hospital corridor door?
It is built for commercial high traffic conditions, in solid cast brass rather than a stamped or die cast body, and Cal-Royal calls out schools, healthcare, government buildings, retail, warehouses, and multi-tenant residential as its applications. Cast brass matters on a heavy-traffic opening because that is where a thin stop fatigues and snaps off at the base.
12) Do I need to patch the wall when replacing an old wall stop with a 4CWS-21?
Likely, yes. The 4CWS-21 has a 2 1/8 inch base with three mounting holes, and unless the old stop used the same three-hole pattern within that circle, the previous fasteners will not line up. The 2 1/8 inch base will cover a fair amount of old damage, and for holes it cannot hide, ZenSupply carries the Delaney 2-1/8 inch hole plate metal cover. Check the old hole pattern against the new base before you pull the existing stop off the wall.
13) There is no wall or blocking behind the door. What takes the place of the Cal-Royal 4CWS-21?
The 4CWS-21 is a wall-mounted device and needs solid backing behind it; it ships with mounting hardware suitable for all wall construction applications, but it still has to land on a wall. Where the door opens into open space, a door-mounted stop is the substitution: the Delaney 3 inch HD rigid door stop or the Delaney 3 inch spring door stop mount to the door itself and bear on the floor or baseboard, taking the wall out of the equation. Rigid gives a firm stop; the spring type flexes on contact.
14) What does the Cal-Royal 4CWS-21 offer over a light duty wall device for a high traffic opening?
The 4CWS-21 is built as a commercial grade stop for high traffic conditions in both indoor and outdoor applications, with a solid cast brass body and three mounting holes spreading the load into the wall. Among the wall-mounted alternatives, the Ives WS11, WS20 and WS33 are also rated heavy duty, while the Ives WS40 automatic wall holder is rated light duty. On a school corridor, a hospital entry or a warehouse door that is worked all day, that duty rating is the line to check first, ahead of finish or projection.
15) Will a 2-1/8 inch hole plate cover work in place of a Cal-Royal 4CWS-21?
No, despite the matching diameter. The 4CWS-21 has a 2 1/8 inch base, and the Delaney 2-1/8 inch hole plate metal cover is the same size across, but a hole plate is a blank cover used to conceal an unused opening in a door or wall. It has no bumper and takes no impact from a swinging door. If you are pulling old stops and patching the wall, the plate covers the abandoned holes; the 4CWS-21 is what actually stops the door at the openings you are keeping in service.
16) Will a wall door stop mark or damage the face of the door?
The 4CWS-21 takes the door on a rubber tip that does not scar or mark the door surface, so the door finish survives repeated contact. Set the stop so the tip lands flat on a solid part of the door, not on a glass light, a vision frame, or a piece of applied trim, and it will not chew up the face.
17) How many Cal-Royal 4CWS-21 door stops come in a box?
Both finishes ship as a pack of 10, so one order covers ten openings. That is how a property manager or MRO buyer standardizes a floor or a building on one stop instead of mixing whatever was on the shelf, and it keeps a couple of spares on hand for the next door that gets a hole punched behind it.
18) How do I match a new wall stop to the finishes already installed across a building?
The Cal-Royal 4CWS-21 comes in US10B antique bronze oiled and 26D satin chrome, each sold in packs of 10, which suits standardizing a floor or a wing on one finish in a single order. For openings the 4CWS-21 projection does not suit, the ABH RM Series and ABH RMS Series wall stops carry multiple length options, so a facility can keep a consistent wall-stop approach and vary only the reach where the standoff demands it. Pull one existing stop and confirm the finish code before committing a fleet order.
How fast can I get the Cal-Royal 4CWS-21-US26D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Cal-Royal 4CWS-21-US26D come with a warranty?
Absolutely. The Cal-Royal 4CWS-21-US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Cal-Royal 4CWS-21-US26D?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Cal-Royal 4CWS-21-US26D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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