Deltana DSBLO4 Lift Off Hinge 4" x 4" Solid Brass

A lift-off hinge splits into two leaves so the door lifts straight off its pins instead of you unscrewing the hinges. The Deltana DSBLO4 is the 4 x 4 inch solid brass version. Use it anywhere the door has to come off routinely, for moving furniture through, refinishing, seasonal storage doors, or servicing whatever is behind it. A standard full mortise butt hinge like the Orca Hardware 4040 Series 4 x 4 inch square corner hinge is the better pick when the door should stay put, since a lift-off leaf can also be lifted off by anyone standing on the other side of it.

Handing is required. Lift-off hinges are not reversible, so the DSBLO4 comes as either Left Hand or Right Hand and both are sold in Oil Rubbed Bronze, Polished Nickel, and Unlacquered Brass. Stand outside the door, on the side it swings away from: if the hinges are on your left, order Left Hand. Get it backwards and the pin leaf ends up on the wrong jamb.

The DSBLO4 measures 4 x 4 inches with square corners and mounts full mortise, so it drops into an existing 4 inch square corner pocket without recutting. It will not fit a radius corner mortise, which is what most factory-prepped residential doors have. If your existing hinges have rounded corners, either chisel the corners square or stay with a radius hinge such as the Orca Hardware 4014 Series 4 x 4 inch with 1/4 inch radius corners.

No. The DSBLO4 is a residential-duty plain bearing hinge, and plain bearings wear under the cycle counts an office or retail opening sees. For commercial traffic go to a ball bearing or concealed bearing hinge instead, such as the Ives 3CB1HW heavy weight concealed bearing full mortise hinge or the Don-Jo HWBB84545 heavy weight ball bearing hinge at 4-1/2 x 4-1/2 inches. Keep the DSBLO4 for apartments, houses, and interior residential openings.

Think hard before you use one there. The DSBLO4 is not a non-removable pin hinge, and the whole point of a lift-off leaf is that the door comes off without tools. On an out-swing exterior door the hinges are on the outside, so anyone can lift the door off. For an exterior opening that needs pin security, a hinge like the Hager BB1168 non-removable pin full mortise ball bearing hinge is the right family of product. The DSBLO4 belongs on interior and in-swing doors where easy removal is the point.

The DSBLO4 ships with slot head #12 x 1-1/4 inch wood screws, which is the right length for a wood door and wood jamb. Into a steel frame or a hollow core slab those screws will not hold, and you will need the appropriate machine screws or anchors for that substrate. Note the unit of measure is each, not a pair, so a standard three-hinge door needs three pieces ordered in the same finish and the same hand.

The Deltana DSBLO4 is a plain bearing solid brass hinge positioned for residential use. For a door cycling under commercial traffic, the ball bearing options in the same family of sizes are the Orca Hardware 3535 Series, a 4-1/2 inch by 4-1/2 inch square corner ball bearing commercial hinge rated medium duty, and the Don-Jo HWBB84545, a heavy weight full mortise ball bearing hinge at 4-1/2 inch by 4-1/2 inch. Both are 4-1/2 inch, so they need a wider mortise than the 4 inch DSBLO4 prep. Staying at 4 inch, the Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners.

The Deltana DSBLO4 is cut with square corners, so it will not seat in a pocket routed with a radius. For a 4 inch by 4 inch radius corner pocket, the Orca Hardware 4014 Series is a 4 inch by 4 inch hinge with a 1/4 inch radius corner and plain bearing knuckles. The Delaney RH45xx exterior residential hinges are 4 inch by 4 inch with a 5/8 inch radius, and the Delaney RH40xx Castlegate hinges are 4 inch by 4 inch supplied 5/8 inch radius by square. Match the radius on the existing pocket before ordering, since 1/4 inch and 5/8 inch are not interchangeable.

Both mount the same way but they do not behave the same way. The Deltana DSBLO4 is a full mortise hinge whose leaves separate so the door lifts straight off the frame leaf without pulling a pin, which is why it is handed left or right. The Ives 3CB1 is a 3-knuckle concealed bearing full mortise hinge and the Hager 920 is a 2-knuckle full mortise concealed bearing hinge; both use a continuous pin through the knuckles, so the door comes off only by removing the pin and neither is handed. If the requirement is that the door lift off for service or seasonal removal, a conventional pin hinge is not a substitute.

Sold each, so count the hinges on the door and order that many. Interior residential doors usually take three; a taller or heavier slab takes four. Every piece on the same door must be the same hand, so a single door is three Left Hand or three Right Hand, never a mix. Finish must match across the set too, and the choices are Oil Rubbed Bronze, Polished Nickel, and Unlacquered Brass.

Unlacquered Brass is bare solid brass with no clear coat, so it will darken and patina with handling. That is the intended look, and it is the option to pick if you are matching other living-finish brass in the building. If you want the shine to stay put, Polished Nickel or Oil Rubbed Bronze are the other two DSBLO4 finishes. Deltana notes these hinges also take their decorative finials, so you can dress the barrel to match the rest of the trim.

Brass is the reason to buy the DSBLO4 over a plated steel hinge. It is solid brass through the substrate, not plated, so a scratch does not expose steel underneath and start rust in a humid bath, laundry, or salt-air location. Plated steel residential hinges such as the Emtek 91013 plain bearing pair at 3-1/2 x 3-1/2 inches are fine on dry interior openings but rely on the plating to stay intact.

For a fixed-pin 4 x 4 inch square corner replacement, the Orca Hardware 4040 Series square corner plain bearing hinge matches the size and corner style with the same plain bearing type. The Delaney CH401X 4 x 4 inch commercial ball bearing hinge is the step up for heavier or higher-traffic doors, also square corner. Both drop into the same 4 inch square mortise the DSBLO4 uses, so you can swap without touching the pocket.

The Deltana DSBLO4 is not a non-removable pin hinge, and its lift off design means the door parts from the frame leaf by lifting. On an outswing exterior door where the hinge is on the secure side of the opening, the Hager BB1168 NRP is a non-removable pin full mortise ball bearing hinge built for that condition. For institutional openings, the BEST BB855 and Stanley BB855 are double weight prison hinges in detention service. These are steel commercial hinges rather than the solid brass of the DSBLO4.

The Deltana DSBLO4 is solid brass throughout in Oil Rubbed Bronze, Polished Nickel and Unlacquered Brass. If the opening needs a conventional pin hinge in a non-ferrous material, the McKinney T2314 is a non ferrous standard weight 5-knuckle hinge, rated medium duty. The Don-Jo HWBB85045 is a heavy weight full mortise ball bearing hinge in brass at 5 inch by 4-1/2 inch with a satin chrome finish. Both are conventional pin hinges, so the door will not lift off the way the DSBLO4 allows.

The DSBLO4 is a solid brass mechanical lift off hinge with no provision for conductors. To carry power or monitoring through the hinge, use an electrified hinge: the Command Access ETH-BB68 is a 5-knuckle heavy duty energy transfer hinge, the ETH-CB70 is the 3-knuckle standard weight version, and the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect. If the opening also needs door position sensing, the Command Access ETM-BB68 combines energy transfer with an integrated door position switch. All of these are steel full mortise hinges on a conventional pin, so they replace the lift off function as well as the wiring.

The Deltana DSBLO4 lift off design separates the door leaf from the frame leaf, so it is supplied left hand or right hand and the two are not interchangeable. If you are buying for a fleet of doors and do not want to track handing, the Orca Hardware 4040 Series 4 inch by 4 inch square corner plain bearing commercial hinge and the Delaney CH401X 4 inch by 4 inch commercial ball bearing hinge are conventional pin hinges at the same 4 inch size. For 3-1/2 inch prepped doors, the Delaney RH35xx bulk steel residential interior hinges ship as pairs with a 5/8 inch radius.

The DSBLO4 is a plain bearing lift off hinge with no closing mechanism in the barrel. If the opening needs the door to return on its own, the Stanley Security 2060R is a full mortise spring hinge with square corners at 4-1/2 inch by 4-1/2 inch on a ferrous steel base, rated heavy duty. It is a 4-1/2 inch hinge, so the mortise is larger than the 4 inch DSBLO4 prep, and it is a fixed pin hinge, so the door will no longer lift off.

No. The DSBLO4 is a full mortise hinge, meaning both leaves mortise into the door edge and the frame rabbet. A frame prepped for half mortise needs a hinge with a surface applied frame leaf, such as the Hager 1129, a half mortise plain bearing commercial hinge at 4-1/2 inch on a standard weight steel base. For a full surface condition, the Hager 990 STEEL is a full surface hinge at 3 inch by 4 inch with a welded tip.

That is exactly the job. Lift the door and it separates at the hinge, no screwdriver, no drifting the pins out, and the mortises stay untouched so it goes back on square every time. The DSBLO4 in 4 x 4 inches with plain bearings suits a residential-weight slab getting occasional removal. If the door is heavy or comes down weekly, a plain bearing will loosen up over time and a bearing hinge is the more durable choice.

No, they solve different openings. The DSBLO4 is a full mortise hinge that mounts to the door edge and frame rabbet and swings one direction. The BEST DAP-3 is a heavy duty double acting pivot for commercial interior doors, mounting at the top and bottom of the leaf and allowing the door to swing both ways. The BEST CB1969R is a concealed bearing heavy weight pivot-reinforced hinge, which is a hinge used alongside a pivot in a reinforced set. If the drawing calls for a pivot, a mortise hinge does not substitute.