Deltana S44R4NB 4" x 4" x 1/4" Radius Hinge, NRP, Ball Bearing, Steel (Pair)

NRP means non-removable pin. A set screw in the barrel keeps the pin from being driven out while the door is closed, so an out-swing door with its hinge barrels on the exterior can't be lifted off the frame by pulling the pins. That is the reason to spec NRP on any door that swings out toward a public side.

Deltana classifies the S44 steel hinges as residential. They are a value choice for interior doors in homes and light-traffic openings. For a commercial corridor, stair, or high-cycle opening, step up to a commercial ball bearing hinge such as the Orca Hardware 3535 Series 4-1/2 x 4-1/2 square corner ball bearing or the Ives 3CB1HW heavy weight concealed bearing.

Ball bearings sit between the knuckles and carry the door's weight on a rolling surface, so the door swings quietly and the knuckles do not wear metal on metal the way a plain bearing does. The S44R4NB is ball bearing. On a light, low-traffic interior door a plain bearing is usually fine, and options like the Orca 4014 Series 4 x 4 x 1/4 radius plain bearing hinge or the Emtek 91013 residential plain bearing hinge cover that case. Where a solid core door, a closer, or heavy daily traffic is involved, the ball bearing is the better call.

No, not without recutting. The S44R4NB has 4 x 4 inch leaves, which are taller and wider than a 3-1/2 inch mortise pocket and will not fill or fit that prep. For a 3-1/2 inch opening stay with a 3-1/2 inch hinge such as the Orca 3514 Series 3.5 x 3.5 x 1/4 radius corner hinge, which keeps the same 1/4 inch radius corner.

No. The Deltana S44R4NB is a plain mechanical steel hinge with a non-removable pin and no wiring path through the barrel. For power transfer at the hinge, use an electrified hinge such as the Command Access ETH-BB68 energy transfer hinge with a 5 knuckle heavy duty steel base, or the BEST CECB179-12C full mortise concealed bearing electrified hinge with a 12-wire quick connect. If you also need door position monitoring, the Command Access ETM-BB68 adds an integrated door position switch.

The Deltana S44R4NB is cut with 1/4 inch radius corners, so it will not seat correctly in a square-cut mortise. For a square corner 4 inch by 4 inch pocket, the Orca Hardware 4040 Series is a square corner plain bearing commercial hinge in that size, and the Delaney CH401X is a 4 inch by 4 inch commercial ball bearing hinge with square corners. Match the corner profile to the existing mortise rather than re-cutting the jamb.

The S44R4NB is sold by the pair, which is two hinges. A standard interior door usually takes three hinges, so you would order two pairs per door and have one spare, or cover three doors with four and a half pairs. Heavier or taller doors typically get four hinges, which is two pairs.

No. It's a full mortise butt hinge with two symmetrical leaves, so the same hinge works on a left or right hand door. What does matter is the corner radius and the 4 inch leaf size matching your door and frame prep.

Yes. The Deltana S44R4NB carries ball bearings and a non-removable pin. For a lower-traffic interior opening where neither is required, the Orca Hardware 4014 Series is a 4 inch by 4 inch hinge with the same 1/4 inch radius corner profile using plain bearings. It drops into the identical mortise; you give up the bearing race and the captive pin.

No. The Deltana S44R4NB is a standard ball bearing full mortise hinge with no spring mechanism. For self-closing from the hinge, use a spring hinge such as the Stanley Security 2060R full mortise spring hinge in 4.5 inch by 4.5 inch with square corners, rated heavy duty. Note the larger leaf size and square corner, so the jamb prep will differ.

The Deltana S44R4NB is a residential-rated steel pair with ball bearings, a non-removable pin, and 1/4 inch radius corners, offered in Oil Rubbed Bronze, Brushed Nickel, and Polished Brass. For straight bulk replacement where the finish and NRP are not the deciding factors, the Delaney RH45xx is a 4 inch by 4 inch bulk residential exterior hinge pair with 5/8 inch radius corners. The corner radius differs, so confirm the existing mortise before ordering in quantity.

No. The Deltana S44R4NB is a residential-rated 4 inch by 4 inch steel hinge. Detention openings call for purpose-built hardware such as the BEST BB855 heavy duty steel double weight concealed ball bearing prison hinge, the Stanley BB855 double weight prison hinge in 5 inch by 6 inch furnished with no holes and not swaged, or the Hager 990 STEEL full surface prison hinge, 3 inch by 4 inch with a welded tip.

The Deltana S44R4NB is a full mortise hinge, meaning both leaves mortise into the door and the frame. Where the frame leaf cannot be mortised, the Hager 1129 is a half mortise plain bearing commercial hinge at 4-1/2 inch standard weight, and the Hager 990 STEEL is a full surface prison hinge that applies to the face of both door and frame. Confirm which leaf can be recessed before choosing.

Three finishes: oil rubbed bronze, brushed nickel, and polished brass. Pick the one that matches the lever or knob trim already on the door, since a steel hinge is plated and won't patina alongside a solid brass lockset the same way.