Rockwood 440 Low Dome Stop, 2" x 1-1/8"

The Rockwood 440 is a low dome floor stop that protects walls and adjacent fixtures by halting the door at the floor before the handle or edge can hit them. A floor dome stop is a small, rounded bump mounted to the floor that the door strikes and rests against, the low dome profile sits just 1-1/8" high, low enough to step over without becoming a trip hazard while still stopping the door cleanly. The 440 is made of solid cast brass with a DuraFlex bumper, so it absorbs repeated impact and holds up in commercial traffic, and it's built specifically for doors that sit close to the floor, without a threshold and not undercut.

What a low dome stop does and when to use it

This is the key fit decision, so it's worth being clear. A door stop's job is to arrest the door's swing so the lever, knob, or door edge never slams into the wall, a baseboard, or a neighboring fixture. A floor-mounted dome stop does that down low, at the floor, which is the right approach when a wall stop isn't practical or when you want the stop near the door's leading edge for maximum protection.

The "low dome" part matters: at 1-1/8" tall on a 1-7/8" diameter base, the 440 is low enough that it sits below most door bottoms without interfering. That's why it's specified for doors without thresholds that are not undercut, doors that hang close to the floor. If your door is undercut (raised higher off the floor) or you need the bumper to reach a higher contact point, Rockwood's high dome stop (the 442) gives more height, and the 441 covers other low dome configurations. Matching dome height to the door's floor clearance is the whole trick to a clean install.

Solid cast brass built for commercial traffic

The 440 is solid cast brass, not stamped or plated pot metal, so it's substantial and durable where lighter stops bend or work loose. The DuraFlex bumper is the contact surface that takes the door's impact, designed to absorb the hit quietly and resist tearing over thousands of cycles. It mounts with the included #12 x 1-1/4" flat head wood screw and plastic anchor, and the cast brass body is available in a full range of architectural finishes to match the room's other hardware. It meets ANSI/BHMA A156.16 (L02141), the standard for auxiliary builders hardware like door stops.

Rockwood 440 specifications

• Type: Low dome floor stop (door bumper).

• Application: For doors without thresholds, not undercut (doors sitting close to the floor).

• Dimensions: 2" x 1-1/8". Height 1-1/8". Base 1/4" h x 1-7/8" diameter.

• Material: Solid cast brass with DuraFlex bumper.

• Fastener: #12 x 1-1/4" flat head wood screw with plastic anchor (included).

• Standard: ANSI/BHMA A156.16, L02141.

• Finishes: US3 bright brass, US10 satin bronze, US10B oil rubbed bronze, US15 satin nickel, US26 bright chrome, US26D satin chrome.

• Part number: 440.

Why choose the Rockwood 440

Rockwood is a long-established commercial builders hardware brand, and the 440 is a dependable, value-priced floor stop for protecting walls and finishes. You get solid cast brass construction, a DuraFlex bumper that takes repeated impact, easy single-screw mounting, and finishes to match the rest of the opening, all to the ANSI A156.16 standard. For offices, corridors, classrooms, and any door that hangs close to the floor and needs a low-profile stop, the 440 is a simple, durable choice.

One thing to confirm before ordering: the 440 is the low dome version for doors without thresholds that are not undercut. If your door is undercut or needs more bumper height, look at the high dome 442, and add a riser (like the Rockwood 444) if you need to raise the contact point. Choose your finish to match the room's other hardware.

Order the Rockwood 440 from American Locksets

We stock the full Rockwood floor stop line from authorized distribution, so every stop ships with the manufacturer warranty. Compare dome heights and styles in the Rockwood floor stops category, or browse all door stops and holders.