Rockwood 911 Adjustable Ball Catch

The catch body goes in the door edge and the strike mounts on the jamb. The 911 uses a wide strike for that jamb face, so the ball rides up into the strike plate as the door closes. Plan your mortise in the door edge and your strike prep on the stop side of the jamb, not the reverse.

The strike measures 1-3/8 by 2-1/8 inches, so lay out the jamb prep to that footprint. If you are replacing an older catch with a smaller plate, the 911's wider strike will usually cover the old screw holes rather than leave them showing.

It is classified under ANSI A156.9 as a B03017 ball catch and Rockwood lists it as a residential-duty item. For an inactive leaf on a pair, a closet, or a light office door it does the job. For a high-cycle commercial opening you want a latching device rather than a friction catch.

The Rockwood 911 is a square-corner ball catch with a wide strike that mounts on the jamb while the catch body goes in the door, and it fastens with four #6 x 3/4 inch flat head sheet metal screws. The Orca Hardware 70DR Series is a drive-in ball catch supplied with a radius strike, so the catch body is driven into a bored hole in the door edge rather than screw-mounted, and its strike has rounded corners instead of square. If the existing mortise in the door edge is a square-cornered pocket, the 911 pattern matches it; if the door edge is bored round, the drive-in style suits it.

The Emtek 8802 is a door ball catch and the Delaney Drive-In Ball Catch is another, so all three do the same job of holding an inactive or closet leaf shut without a latch. The Rockwood 911 is brass with dual adjustment for door clearance and holding strength, and its strike prep is 1-3/8 inch by 2-1/8 inch. The Delaney is a drive-in style, meaning its body seats in a bored hole in the door edge. Match the replacement to the prep already cut in the door and jamb rather than to the brand.

No. The Rockwood 911 uses a square-corner strike prepped at 1-3/8 inch by 2-1/8 inch, and the Orca Hardware 70DR Series comes with a radius strike. A radius strike will leave the square corners of an existing 911 mortise exposed, and a square strike will not seat cleanly in a router-cut radius pocket without filing. When swapping between the two, plan on either re-prepping the jamb or matching corner style to what is already cut.

No, four #6 x 3/4 inch flat head sheet metal screws come with it. That length suits a wood jamb and door edge; on a hollow metal frame you will want machine screws into a tapped or drilled-and-tapped strike, which are not part of the pack.

The Rockwood 911 is the square corner version, so it drops into a square-routed mortise cut with a chisel or a square-cornered template. If your existing prep is radiused from a router bit, the Orca 70DR series comes with a radius strike and will match that cut without corner chiselling.

A ball catch holds by friction only, so on the inactive leaf of a pair it keeps the door from drifting but gives no security and no positive latch. The 911's holding strength adjustment lets you set it firm enough to resist a draft or an HVAC pressure difference. If the pair needs to stay shut under load or take any push, use flush bolts into the head and threshold instead.

The Rockwood 911 carries dual adjustment for both door clearance and holding strength, so the tension and projection can be tuned in place after hanging without pulling the catch. The Emtek 8802 door ball catch and the Delaney Drive-In Ball Catch are ball catches in the same application, and the Orca 70DR Series is a drive-in ball catch. For a leaf that a property manager expects to re-tension seasonally on wood doors that move, the adjustable brass 911 is the one built for that.

The Rockwood 911 is certified to ANSI A156.9, B03017, which is the standard institutional and MRO submittals cite for auxiliary door hardware. The Emtek 8802 door ball catch, the Delaney Drive-In Ball Catch, and the Orca 70DR Series drive-in ball catch are ball catches for the same opening. When the drawing names a BHMA number rather than a function, the 911 carries the A156.9 B03017 designation the submittal is asking for.

A ball catch holds a door closed by spring tension on a ball bearing against a strike, with no latchbolt and no lever or knob turning anything. The Rockwood 911 does this with dual adjustment for clearance and holding strength; the Emtek 8802 and the Delaney Drive-In Ball Catch are the same class of hardware. What none of them do is latch or lock, so on any opening that must be secured or that needs positive latching, a ball catch is the wrong part regardless of brand, and the Rockwood 911 is rated for residential service.

Brass body, supplied in 626 satin chrome. Satin chrome is the common match for satin chrome and satin nickel lever trim on the rest of an opening, so it blends with most modern commercial and upper-end residential hardware sets.