Rockwood 901 Extra Heavy Duty Magnetic Catch

It carries ANSI A156.9, B03161, which is the auxiliary door hardware standard, and it's a commercial-duty catch rather than a residential one. If your drawing calls out a B03161 magnetic catch, the 901 is the number that answers it.

The Trimco 810 Heavy-Duty Magnetic Catch, from Trimco's 810 Series, is the nearest cross-brand counterpart to the Rockwood 901 Extra Heavy Duty Magnetic Catch. Both are commercial magnetic door catches for the same job: holding a door closed without a latch or strike prep. Where the two differ is in what the Rockwood 901 carries in the box and on its record. The 901 is built with dual triple-pole self-aligning magnets and ships with two short strikes and one long strike, so a single carton covers a pair of doors or a single door, and it is certified to ANSI A156.9, B03161 if your facility spec calls for a BHMA auxiliary hardware citation. Specify by finish: the 901 is offered in aluminum and brass.

Fasteners are in the box. The body mounts with two #6 x 1-1/2 inch truss head sheet metal screws and the strike with two #6 x 1/2 inch flat head sheet metal screws. Installation instructions are included too. Those are wood/sheet-metal screws, so a hollow metal frame or a masonry condition needs anchors you supply.

No handing to specify. The 901 uses dual triple-pole self-aligning magnets, so the catch pulls the strike into position regardless of which way the door swings or which leaf it's on. You pick a finish and that's the whole order.

A magnetic catch like the 901 holds a door closed without any mechanical latching, so there's no bolt to align and nothing to wear against a strike lip. That suits doors that just need to stay shut, cabinet and closet doors, inactive leaves, doors under light traffic. It's a holding device, not a locking one. If the opening needs to be secured or latched, that's a lock or a latch, not a catch.

Trimco's 810 Series heavy-duty magnetic catch is the cross-brand counterpart we carry. Both are heavy-duty commercial magnetic catches. The 901 is the one to stay with if you need the pair-of-doors setup out of the box, since it packs the long strike along with the two short ones.

No. The Rockwood 901 Extra Heavy Duty Magnetic Catch is packed with two short strikes and one long strike and can be used on a pair of doors or on a single door, so the same part number covers both conditions without a separate order for the inactive leaf. If you are cross-shopping, the comparable choice is the Trimco 810 Heavy-Duty Magnetic Catch from the 810 Series; confirm its strike packing against the pair condition before you specify it, because the multi-strike pack is what makes the 901 a one-SKU answer for a pair.

Only where the opening does not need mechanical holding force. The Rockwood 901 Extra Heavy Duty Magnetic Catch holds through dual triple-pole self-aligning magnets against a surface-applied strike - there is no spring-loaded roller or ball engaging a mortised strike, so the door prep and the feel at the door are different. That makes the 901 a substitution for a roller or ball catch only when you are willing to change to magnetic holding, not a drop-in for the existing prep. If you want a magnetic catch and are comparing brands rather than mechanisms, the Trimco 810 Heavy-Duty Magnetic Catch in the 810 Series is the peer to weigh against it. For a facility standardizing on one auxiliary catch, note the 901 is a commercial-rated aluminum part certified to ANSI A156.9, B03161.

Two: aluminum and brass. The catch body is aluminum substrate. On a door that's already got aluminum frames or aluminum push plates, the aluminum finish matches the rest of the opening; brass is there for the hardware suites running brass trim.

That's exactly the use case. Rockwood hardware runs through institutional buildings, offices, retail, educational, detention, sports facilities, hotels and restaurants. The 901 is spec'd commercial and holds ANSI A156.9, B03161, which is what a facility standardizing auxiliary hardware across a building wants to see on the submittal.