Rockwood 525 Heavy Duty Spring Base Door Stop, 3" Projection, 1" Diameter Base

The 525 has a 3 inch projection, measured from the mounting surface to the tip of the bumper. That is what sets how far the lever, knob or the door face stops short of the baseboard. If you need more standoff for a deep-throw lever or a thick base trim, a 4 inch baseboard stop like the Emtek 2231 gets you an extra inch, and the Delaney solid brass baseboard stop adjusts from 3-1/2 to 4-1/2 inches.

The Orca Hardware TH-3118 is a 3-1/8 inch spring door stop, and the Orca TH-3134 is a 3-3/4 inch spring door stop. Both use the same spring-body approach as the Rockwood 525, which has a 3 inch projection and a steel substrate. If you are matching projection closely on an existing wall or base condition, the TH-3118 sits just above the 525 at 3-1/8 inch and the TH-3134 reaches 3-3/4 inch.

Reach for a longer baseboard stop. The Emtek 2231 is a 4 inch baseboard door stop, and the Delaney 40201X baseboard stop adjusts from 3-1/2 to 4-1/2 inches, so it can be dialed in on site when the exact reach is unknown. The Rockwood 525 is fixed at a 3 inch projection, which suits openings where the door face lands close to the base.

The Rockwood 525 is a spring base door stop, built to arrest the swing rather than retain the door. The Orca TH-30HD carries a door holder function in a heavy duty rigid body, so that is the part to specify when the opening needs the door held in the open position, such as a corridor or loading route that stays propped during moves.

Screws are included: 6 x 3/4 inch sheet metal screws. That length is sized for baseboard or wall mounting, so if you are anchoring into drywall rather than solid wood blocking you will want to add anchors, since 3/4 inch of thread will not hold a slammed door on its own.

The 525 carries ANSI A156.16, function number L02051. A156.16 is the auxiliary hardware standard, and the L-number is how stops get called out on a hardware schedule, so if your spec sheet reads L02051 this is the item that answers it.

Rockwood rates the 525 as a residential item, and it is built of spring steel with heavy spring construction for wear. For unit doors, offices and interior openings in a multi-family or hotel building it does the job. For high-traffic commercial abuse, where a door gets thrown into the stop dozens of times a day, a rigid holder such as the Orca TH-30HD heavy duty unit is the sturdier answer because nothing in it flexes.

No. The Delaney 4029XX is a 2 inch height round solid brass floor bumper, which mounts to the floor and stops the door at its bottom edge. The Rockwood 525 is a baseboard stop that fastens to the base trim with 6 x 3/4 inch sheet metal screws and catches the door at a 3 inch projection off the wall. If the base trim is unavailable or the door swings over carpet or an obstruction near the wall, the floor-mounted bumper is the different mounting approach, not a drop-in swap.

The Delaney 40201X is a solid brass baseboard door stop adjusting from 3-1/2 to 4-1/2 inches, and the Delaney 4029XX is a 2 inch round solid brass floor bumper. The Rockwood 525 is steel and comes in antique brass and bright nickel finishes, so if the requirement is a brass finish over a steel body the 525 in antique brass covers it, while the Delaney parts are solid brass through the body.

The Hager 212 is an adjustable rigid door stop with an 80 to 120 degree range, so the arrest angle can be set within that band. The Rockwood 525 is a fixed 3 inch projection spring stop, which stops the door where the base trim and the projection place it rather than at a selectable angle. Facilities protecting adjacent walls, casework, or equipment at a set swing angle are the usual case for the adjustable version.

Spring steel, with a plated finish over it. That matters for two reasons: steel gives the spring its recoil and its resistance to being bent flat, and it also means this is not a solid brass part. If you specifically need solid brass, for a coastal install or a spec that calls out the material, the Delaney and Emtek baseboard stops are the solid brass options.