Deltana SS4030B 4" x 3" Square Corner Hinges (Pair), Stainless Steel, Ball Bearing

That is what they are built for. The SS4030B is stainless steel through the leaf and substrate, not plated steel, so salt air and constant moisture do not attack it the way they attack a plated residential hinge. Deltana rates the stainless line for waterside properties and outdoor use. The ball bearing knuckle also keeps a heavier exterior slab swinging without the squeal and sag you get from a plain bearing hinge on a storm-side door.

It is 4 x 3, not the more common 4 x 4. The shorter leaf width matters: a 4 x 3 will not cover the mortise left by a 4 x 4 hinge, and on a standard 1-3/4 inch door the narrower leaf changes how far the door clears the trim when it swings. If you are replacing existing hinges, measure the pocket in the jamb before ordering. For a true 4 x 4 square corner ball bearing hinge, the Delaney CH401X is the 4 x 4 equivalent.

The SS4030B has square corners, which means it drops into a mortise cut with a router and a square chisel corner, or a factory prep with square pockets. If your existing hinges have rounded corners, they were cut with a radius template and a square corner hinge will leave gaps at the corners of the pocket. Look at the hinge that is in the door now: rounded corner means you want a radius hinge such as the Orca 4014 Series in 4 x 4 with a 1/4 inch radius, or the Orca 3514 Series at 3-1/2 x 3-1/2.

Deltana lists the SS4030B as residential duty. It suits house entries, patio doors, and coastal residential work. For a commercial opening, an apartment corridor door, or anything on a closer taking real traffic, step up to a heavy duty commercial hinge: the Don-Jo HWBB74545 at 4-1/2 x 4-1/2 or the Ives 3CB1HW heavy weight concealed bearing full mortise hinge are the kind of thing that belongs on those doors.

No. The SS4030B is a standard pin hinge, not NRP. On an outswing exterior door the hinge pins sit outside, and without an NRP set screw the pins can be driven out. If security on an outswing opening is the concern, the Hager BB1168 NRP is a full mortise ball bearing hinge built with a non-removable pin. Inswing doors, where the barrels are on the protected side, are not affected.

The Delaney CH401X is a 4" x 4" commercial ball bearing hinge with square corners, so it keeps the ball bearing action and the square corner prep but runs 4 inches on the leaf width rather than the SS4030B's 3 inch leaf. The Deltana SS4030B is 4" x 3" with square corners and stainless steel construction, which is what carries it on waterside and outdoor openings where corrosion resistance drives the choice. If the door frame is already mortised for a 4" x 3" leaf, the CH401X will need a wider mortise on the jamb side.

The Deltana SS4030B is a residential duty full mortise ball bearing hinge in stainless steel. For a commercial opening carrying heavy duty service, the Don-Jo HWBB84545 is a heavy weight full mortise ball bearing hinge at 4-1/2" x 4-1/2" in satin chrome, and the Don-Jo HWBB85045 is a heavy weight full mortise ball bearing hinge at 5" x 4-1/2" in brass with a satin chrome finish for wider or heavier leaves. Both are larger than the 4" x 3" SS4030B, so the jamb and door mortise have to be cut or shimmed to the new size rather than swapped straight across.

The Deltana SS4030B is not a non-removable pin hinge. On an outswing exterior door where the barrel is accessible from the unsecured side, the Hager BB1168 NRP is a non-removable pin full mortise ball bearing heavy duty hinge and keeps the same full mortise mounting and ball bearing knuckle. It is a heavier duty steel hinge rather than a stainless one, so on a coastal or waterside opening the corrosion tradeoff has to be weighed against the pin security.

SS4030B is sold by the pair, so one order gets you two hinges. Most doors take three hinges, so plan on ordering enough pairs to cover it: two pairs covers a door and leaves you a spare, or covers two doors at two hinges each on light interior slabs. Count the hinge pockets already cut in your jamb and buy to that number.

Wood screws are furnished, #10 x 1-1/4 inch, which is what you want going into a wood jamb and a wood door stile. No machine screws are supplied, so if you are hanging into a hollow metal frame with tapped hinge prep you will need to source machine screws separately. The leaf thickness is .119, so the countersinks are cut for a standard flat head wood screw.

Ball bearings sit between the knuckles and carry the load on a rolling surface instead of metal grinding on metal. On a heavy or frequently used door, that means the door keeps swinging smoothly and does not start to bind or squeak as the knuckles wear. The SS4030B is a ball bearing hinge. Plain bearing is fine for a light interior door that gets moderate use, which is what options like the Emtek 91013 residential plain bearing hinges or the Orca 4040 Series 4 x 4 square corner plain bearing hinge are for. Heavy slab, solid core, or a door that gets opened all day: go ball bearing.

Full mortise, yes. Both leaves recess into pockets, one in the door edge and one in the jamb, so the leaves sit flush and the door closes tight against the stop. If your door and frame are not already prepped, both need routing to the leaf thickness of .119. A door with no mortise cut, or a frame you cannot route, calls for a different mounting method entirely, such as a half mortise hinge like the Hager 1129 or a full surface hinge.

No, and they are not the same class of part. The Deltana SS4030B is a mechanical stainless steel ball bearing full mortise hinge with no wiring path. To carry power through the opening, the BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect, and the Command Access ETH-CB70 is an energy transfer hinge with a 3-knuckle standard weight steel base. If door position also has to be monitored, the Command Access ETM-CB70 is an energy transfer monitor hinge with door position sensing on a 3-knuckle steel base. All three are steel-based rather than stainless, and only one hinge in the opening normally needs to be the transfer hinge.

No. The Orca Hardware COM4040 is a 4" x 4" square corner plain bearing commercial hinge, and the Deltana SS4030B is a 4" x 3" square corner ball bearing hinge in stainless steel. The square corner prep looks the same on the door, but plain bearing and ball bearing are different knuckle constructions, and the leaf sizes differ. Emtek's 92013 is likewise a heavy duty plain bearing hinge, at 3-1/2" x 3-1/2" with square corners in plated steel, while Emtek's 94013 is the heavy duty ball bearing version at the same 3-1/2" x 3-1/2" square corner size, if matching bearing type matters more than matching leaf size.

The Deltana SS4030B is a stainless steel ball bearing hinge sold as a pair, and the stainless construction is what buys corrosion resistance for waterside and outdoor openings. On dry interior doors that resistance is not doing any work. The Delaney RH35xx is a 3-1/2" x 3-1/2" bulk steel residential interior hinge with a 5/8" radius, sold as a pair, and the Emtek 91013 is a residential plain bearing hinge pair at 3-1/2" x 3-1/2" with square corners in plated steel. Note the Delaney is a 5/8" radius corner, not square, so it will not drop into a square corner mortise.

The Deltana SS4030B is a standard ball bearing full mortise hinge and does not close the door on its own. For a self-closing opening, the Stanley Security 2060R is a full mortise spring hinge with square corners at 4.5" x 4.5" on a ferrous steel base, rated heavy duty. It keeps the square corner prep the SS4030B uses but is a larger 4.5" x 4.5" leaf, so the mortise has to match.

No handing to specify. The SS4030B is a plain full mortise butt hinge with a removable pin and symmetrical leaves, so the same hinge works on a left hand or right hand door. You only run into handing on hinges with built-in electrical or sensing hardware, like the Stanley CECB1900R54L, which is ordered left-handed specifically.