Baldwin Reserve 1135 Radius Corner Hinge 3.5"x 3.5"-5/8"

Only if the existing mortise has 5/8 inch radius corners. The Reserve 1135 is a 3.5 x 3.5 inch full mortise hinge cut with 5/8 inch radius corners, so it drops straight into a router-cut pocket of the same size and radius with no chisel work. If the door and jamb were prepped square, or with the tighter 1/4 inch radius that most commercial routers cut, the leaf corners will not sit in the pocket. Check the corner of the hinge you are pulling out before you order.

One hinge per box. The Reserve 1135 is packed one per box, each hinge poly-bagged with its fasteners, so a standard interior door on three hinges means ordering three. That is different from most residential hinges of this size, which come two to a bag, so watch your quantities on a whole-house or unit-turn order.

Residential. The Reserve 1135 is a residential hinge, so it belongs on apartment and house interior doors rather than on a high-traffic office, school, or corridor opening. For commercial-traffic doors, ball bearing or concealed bearing hinges are the type to specify: the Orca 3514 Series is a 3.5 x 3.5 x 1/4 inch radius corner plain bearing commercial hinge in the same leaf size, and the Ives 3CB1 is a 3-knuckle concealed bearing full mortise commercial hinge.

Not without recutting the mortise. The 1135 has 5/8 inch radius corners, and a square pocket will leave a visible gap at each corner of the leaf. If you want to keep the square prep in a 3-1/2 inch size, the Emtek 91013 residential plain bearing hinge and the Schlage Residential S3P1010 are both 3.5 x 3.5 inch square corner mortise hinges. Going the other way, square-to-radius, is easy with a radius corner chisel; radius-to-square is not.

No. Non-removable pins are not available on the Baldwin Reserve 1135 radius corner hinge; it ships with stainless steel rust-proof pins but no NRP option. For a security pin on an out-swinging door, the Deltana CSB45N is a 4-1/2" x 4-1/2" square hinge sold in pairs with a non-removable pin, and the Hager BB1168 is a non-removable pin full mortise ball bearing heavy duty hinge. If the door is prepped for radius corners, the Deltana DE44R5TA is a 4" x 4" x 5/8" radius security hinge in steel, sold in pairs, which carries the same 5/8 inch corner radius as the Baldwin in a larger leaf size. Check the existing mortise size and corner before committing, since these are 4 inch and 4-1/2 inch leaves rather than 3-1/2 inch.

The Baldwin Reserve 1135 is a 3.5" x 3.5" full mortise hinge with 5/8" radius corners. The closest same-size, same-corner alternative is the Delaney 3-1/2" x 3-1/2" bulk steel residential interior hinge with 5/8" radius corners, sold in pairs from the Interior Residential Hinges series. Both drop into an existing 3-1/2 inch mortise cut with a 5/8 inch radius, so no router work is needed on a door already prepped for either. The Delaney is a steel residential hinge sold in bulk pairs, which suits a property manager rehanging many interior doors at once; the Baldwin is a solid brass Reserve Series hinge offered in twelve finishes including 031 Non-Lacquered Brass and 112 Venetian Bronze, which matters when the hinge has to match visible decorative hardware.

The Baldwin Reserve 1135 has 5/8" radius corners, so it will not seat correctly in a mortise cut for square corners. For a square corner 3-1/2" x 3-1/2" mortise, use the Emtek 91013 residential plain bearing hinges, sold in pairs in plated steel with square corners; the Emtek 92013 heavy duty plain bearing hinge in the same 3-1/2" x 3-1/2" square corner size; the Emtek 94013 heavy duty ball bearing hinge, again 3-1/2" x 3-1/2" square corner plated steel; or the Schlage Residential S3P1010, a 3.5" x 3.5" square corner plain bearing mortise hinge sold three to a pack, which is the count a single door takes. Corner style is not field-convertible on a metal hinge leaf, so match the prep rather than the finish first.

The Baldwin Reserve 1135 is a residential hinge. For a commercial opening in a comparable radius corner size, the Orca Hardware 3.5" x 3.5" x 1/4" radius corner plain bearing commercial hinge is a medium duty commercial hinge in the same 3-1/2 inch leaf size, though its corners are 1/4" radius rather than the 5/8" radius the Baldwin uses, so confirm the mortise corner before ordering. Orca also lists a 4" x 4" x 1/4" radius corner plain bearing commercial hinge and a 4" x 4" square corner plain bearing commercial hinge, both medium duty, for larger commercial door preps. For a heavier commercial leaf, the Ives 3CB1HW is a steel heavy weight concealed bearing full mortise hinge with 3 knuckles. The Baldwin remains the choice where the opening is residential and the hinge is meant to be seen.

Screws come with it. Each 1135 hinge ships with #10 x 1 inch flat head Phillips wood screws, which is the right fastener for a solid wood door and a wood jamb. Into a steel frame or a hollow-core slab you'll want to supply your own fasteners.

Twelve, and they are the Reserve palette, so the hinge can be run to match Baldwin Reserve levers and knobs on the same door: 003 Polished Brass PVD, 031 Non-Lacquered Brass, 033 Vintage Brass, 044 Satin Brass PVD, 050 Satin Brass and Black, 055 Polished Nickel PVD, 056 Lifetime PVD Satin Nickel, 060 Satin Brass and Brown, 112 Venetian Bronze, 151 Antique Nickel, 190 Satin Black, and 260 Polished Chrome. If you're matching existing openings in a building, order by the number, not the name.

The leaf gauge is .093 inch. That matters when you're setting the hinge into an existing pocket: if the old hinge was a heavier gauge, the new one will sit proud or shy in the mortise and the door will move on the jamb. The 1135 also gets a bevel on the inside leaf so the barrel closes up tight with no gap showing when the door is shut.

For a painted or utility opening where the hinge won't be seen, the Delaney RH35xx is a 3-1/2 x 3-1/2 inch bulk steel residential interior hinge with the same 5/8 inch radius corner, sold in pairs, so it drops into the identical mortise. The Baldwin 1135 is the one to keep where the hinge is visible and has to match Reserve trim in one of its twelve finishes.

The Baldwin Reserve 1135 is a 3.5" x 3.5" residential full mortise hinge with 5/8" radius corners, machined for smooth movement and fitted with stainless steel rust-proof pins, with the inside leaf beveled for a tight fit when the door is closed. The Emtek 94013 is a heavy duty ball bearing hinge, also 3-1/2" x 3-1/2" in plated steel, but with square corners and sold in pairs. Ball bearing knuckles are the usual specification where a door is heavy or sees constant cycling; the Baldwin is solid brass and offered in twelve finishes, from 003 Polished Brass PVD to 190 Satin Black, for openings where the hinge is part of the visible hardware suite. The corner style is the decision point: they are not interchangeable in the same mortise.

The Baldwin Reserve 1135 covered here is 3.5" x 3.5" and will leave a gap in a mortise cut for a 4 inch leaf. In 4 inch with the same 5/8 inch corner radius, the Delaney 4" x 4" bulk residential hinges for exterior use are 5/8" radius and sold in pairs, and the Delaney 4" x 4" residential hinges for Castlegate come 5/8" radius by square. The Delaney CH401X is a 4" x 4" commercial ball bearing hinge with square corners for a heavier or higher-traffic 4 inch opening. Measure the existing leaf height and width and confirm the corner radius before ordering, since a 4 inch square corner hinge will not fill a 4 inch radius mortise cleanly.

No. The Baldwin Reserve 1135 is a plain full mortise hinge in the Reserve Series with a solid brass body and stainless steel pins; it has no wire path. To power an electric lock, strike, or exit device through the hinge edge, use a purpose-built transfer hinge: the Command Access ETH-CB70 is a 3 knuckle standard weight energy transfer hinge on a steel base, and the ETH-BB68 is the 5 knuckle heavy duty version in the same ETH family. If the opening also needs door position monitoring, the Command Access ETM-CB70 adds door position sensing on a 3 knuckle steel base and the ETM-BB68 carries an integrated door position switch in heavy duty. The BEST CECB179-12C is a steel full mortise concealed bearing electrified hinge with a 12-wire quick connect for higher wire counts. Plan for the electrified hinge to be one hinge in the set, with the rest matched to it.

The Baldwin Reserve 1135 is a standard full mortise butt hinge with stainless steel pins and no closing mechanism, so the door will stay wherever it is left. Where the opening has to close on its own without a surface closer, the Stanley Security spring hinge is a full mortise square corner spring hinge, 4.5" x 4.5", on a ferrous steel base in heavy duty. That is a 4-1/2 inch square corner leaf, so it needs a larger mortise with square corners rather than the 3-1/2 inch 5/8 inch radius pocket the Baldwin fits. Spring hinges are typically installed with at least one non-spring hinge in the set carrying the door weight.

The Baldwin Reserve 1135 is a full mortise hinge, meaning both leaves mortise into the door edge and the frame rabbet. If the frame will not take a mortised leaf, the Hager 1129 is a half mortise plain bearing commercial hinge in 4-1/2 inch standard weight steel, which mortises into the door and screws to the face of the frame. For a channel iron or detention-type frame that takes nothing mortised at all, the Hager 990 is a full surface prison hinge, 3" x 4", with a welded tip in heavy duty. Hinge application type is set by the frame prep, not by preference, so confirm what the existing frame is cut for before substituting.

Both are 3-1/2 inch residential butt hinges. The Deltana DSB35 is a 3-1/2" x 3-1/2" square hinge for residential use, sold in pairs. The Baldwin Reserve 1135 is 3.5" x 3.5" with 5/8" radius corners, packed one per box with each hinge poly-bagged and supplied with #10 x 1" flat head Phillips wood screws, and comes in twelve finishes including 055 Polished Nickel PVD and 260 Polished Chrome. The corner shape is the deciding factor: the Deltana is square, the Baldwin is radiused, and a mortise cut for one will not accept the other without rework. Buying the Baldwin one per box also lets you order an odd count for a three-hinge door.

No. The Baldwin Reserve 1135 is 3.5" x 3.5", a half inch taller and wider than a 3 inch leaf, so it will overrun a 3 inch mortise on the door edge and frame. For a true 3 inch replacement, the Deltana DSB3 is a 3" x 3" square hinge sold in pairs. If you are willing to enlarge the mortise, the 1135 can go in, but that means routing the pocket deeper on both the door and the jamb on every hinge location, which is a different job than a swap.

The pins are stainless steel and rust-proof, which is what usually fails first on a hinge in a humid room. The leaves are machined for a smooth swing. Finish behavior in salt air still depends on which of the twelve finishes you pick; the PVD finishes are the harder-wearing plated options in the range.

Both work on a standard 3-1/2 inch interior door. The Delaney 3-1/2" x 3-1/2" bulk steel residential interior hinge has the same 5/8" radius corners and comes in pairs from the Interior Residential Hinges series, which is the practical choice when you are refitting a run of identical interior doors and no one sees the hinge. The Baldwin Reserve 1135 is solid brass with stainless steel rust-proof pins and comes in twelve finishes such as 056 Lifetime PVD Satin Nickel and 151 Antique Nickel, so it is the one to specify where the hinge is on a unit entry or a finished common area door and has to match the lever and the hinge next to it. A common approach is the Baldwin on the visible doors and the bulk Delaney behind them.