International Door Closers OP-4001 3/4" Offset Pivot Set For Flush Doors, Handed

Handing matters here. The OP-4001 is a handed pivot set, ordered as Left Flush Door or Right Flush Door, and the two are not interchangeable once the door is prepped. Stand outside the opening (the secure or key side), and the side the door swings away from with the hinge edge on your left is a left hand door. Order the hand that matches the leaf you are hanging, in Aluminum, Black, or Storefront Bronze.

The OP-4001 is built for flush doors, which is what its pivot type states, and it is a commercial duty set. A flush door is a full-face leaf, hollow metal or wood, with no separate rail and stile frame. If you are hanging a narrow stile aluminum entrance leaf, that is a different pivot family and this one is not the part.

The OP-4001 is a 3/4 inch offset pivot set for flush doors rated for doors up to 125 lbs, with a full race ball bearing in the bottom door portion and 1/8 inch vertical adjustment. When the door leaf is heavier than that, the Don-Jo BP-2-34 bottom pivot also uses a 3/4 inch offset and is rated to 600 lb capacity, so the same offset geometry carries a much heavier leaf. The BP-2-34 measures 8-7/16 inches by 1-3/16 inches, so confirm the floor and door bottom prep will take that footprint before switching.

The pivot set has 1/8 inch of vertical adjustment built in, so you can raise or drop the leaf that much to even the head and threshold clearance without re-prepping the door. It is the usual fix for a slightly tight or slightly wide top gap on a flush door. Anything beyond 1/8 inch is a prep problem, not an adjustment problem.

It is a commercial set, and the bearing arrangement is where that shows: a full race ball bearing in the bottom door portion carries the load, an Oilite bronze bushing takes the wear in the top frame portion, and the floor or jamb portion uses a case hardened stud. The top door portion has a case hardened, spring loaded pin. Ceiling on it is door weight, 125 lbs, not cycle count.

The 4000 Series top door portion uses a case hardened, spring loaded pin, so the leaf can be dropped into the frame bushing and released rather than needing the frame member pulled. The 5000 Series uses a case hardened fixed pin in that same position, along with a stainless steel stud in the floor or jamb portion instead of the case hardened stud. If your install sequence depends on retracting the top pin, the 4000 Series is the one that does it.

The OP-4001 is a commercial handed offset pivot set for flush doors, built with an Oilite bronze bushing in the top frame portion, a case hardened spring loaded pin in the top door portion, and a full race ball bearing in the bottom door portion, for doors up to 125 lbs. The Deltana PH35 and PH40 are light duty solid brass pivot hinges sold as a pair, the PH35 at 3-7/8 by 5/8 by 1-5/8 inches and the PH40 at 4-3/8 by 5/8 by 1-7/8 inches. They are a different class of part - light duty brass hinge sets rather than a top-and-bottom offset pivot package - so they are not a drop-in for an offset-hung commercial leaf.

Three finishes: Aluminum, Black, and Storefront Bronze, and each is available in both left and right flush door handing. Storefront Bronze is the one that lines up with dark bronze anodized entrance framing; Aluminum matches clear anodized. Since the pivot set is handed, pick the finish and the hand together on the order.

No. The OP-4001 is a mechanical offset pivot set with no electrical transfer through it. If the opening needs power at the leaf for an electric lock, strike monitor, or exit device, that has to come from a separate power transfer device.

The OP-4001 offset pivot set comes in aluminum, black, and storefront bronze finishes, handed left or right for flush doors. Where a solid brass part is wanted at the pivot point, Deltana makes the PH35 and PH40 pivot hinges in solid brass sold as pairs, the PH60 pivot hinge in heavy duty, and the PB985 pivot base in solid brass sold each. The Deltana parts are not fire rated, so they suit openings where no rating has to be met.