Deltana DCH218 Invisible Hinges - 4-5/8" x 1-1/8" Concealed Hinges (Sold as Pair)

The DCH218 body measures 4-5/8 x 1-1/8 inches, so each leaf routs into a pocket of that footprint in both the door edge and the jamb. Invisible hinges are mortised into both halves of the opening, so you need matching pockets facing each other. Lay the router template off those two numbers before you cut.

The DCH218 is sold as a pair, which covers a standard two-hinge concealed application. Heavier or taller doors typically take three, so order two pairs and you will have a spare leaf set. Mounting screws are included: #10 x 1-3/8 inch wood screws come with the hinges, so you are only supplying the door and the router.

Both are concealed barrel hinges, but they are sized and duty-rated differently. The DCH218 is a steel 4-5/8 x 1-1/8 inch hinge on a plain bearing. Among the SOSS options, the 208 Series is a heavy duty 2-3/8 inch hinge for a 1 inch minimum door thickness, and the 212 Series is heavy duty at 3-3/4 inch with a 180 degree swing. The 101 Series is light duty and goes down to a 1/2 to 3/4 inch minimum door thickness, which is the one to look at for thin cabinet doors. Pocket sizes are not interchangeable between these, so pick the series before you rout.

Not without patching. Concealed hinge pockets are cut to a specific footprint, and the DCH218 is 4-5/8 x 1-1/8 inches, which does not correspond to the SOSS sizes such as the 2-3/8 inch 208 Series or the 3-3/4 inch 212 Series. If you are replacing failed hinges in an existing opening, measure the existing pocket and match the size, or plan on filling and re-routing.

The DCH218 is a plain bearing concealed hinge measuring 4-5/8 inches by 1-1/8 inches, sold as a pair, and it is rated for commercial use. When the door weight calls for a heavy duty concealed hinge instead, the SOSS 212 Series (212SS) is a 3-3/4 inch stainless steel invisible hinge with a 180 degree swing, and the SOSS 208 Series (208SS) is a 2-3/8 inch stainless steel invisible hinge that requires a minimum door thickness of 1 inch. Both are heavy duty; the DCH218 is the larger mortise at 4-5/8 inches high.

The DCH218 is a 4-5/8 inch by 1-1/8 inch concealed hinge built for commercial door work and ships with #10 x 1-3/8 inch wood screws, which needs a door with enough edge to take that mortise and that screw length. For thin stock, the SOSS 101SS (101SSUS) is a light duty invisible hinge in stainless steel with a minimum door thickness of 1/2 to 3/4 inch, which is the smallest of the group. The SOSS 203 Series (203SS) is also light duty stainless with a 180 degree swing.

No. The Deltana DCH218 is mortised for a 4-5/8 inch by 1-1/8 inch body, while the SOSS 208 Series (208SS) is a 2-3/8 inch invisible hinge, so the existing pocket does not match and the leaf cutout would have to be re-cut or filled. The 208SS also calls for a minimum door thickness of 1 inch. If you are replacing hinges in an existing DCH218 mortise, match the 4-5/8 inch by 1-1/8 inch dimension rather than swapping series.

The included fasteners are #10 x 1-3/8 inch wood screws, which is a wood-substrate fastener. They bite fine into solid stock or a solid-core edge band. If you are hanging into a hollow-core door edge, a particleboard core, or a metal jamb, those screws are the wrong fastener and you will need to supply the correct anchor for that substrate.

Deltana classes the DCH218 as commercial. The body is steel throughout, both material and substrate, which is what carries the load on a concealed barrel hinge. It runs on a plain bearing rather than ball bearings, so it suits doors that cycle at a normal office or tenant-unit rate rather than a high-traffic entry that opens hundreds of times a day.

Go invisible when the door face has to read as an uninterrupted panel: jib doors, flush cabinetry, hidden storage, paneled walls. The DCH218 shows nothing when closed and still swings to 180 degrees. The tradeoff is labor. A butt hinge screws to the surface of the edge and jamb; a concealed hinge needs a routed pocket, 4-5/8 x 1-1/8 inches here, cut accurately in both the door and the frame. If the door is a painted utility opening and nobody is looking at it, a butt hinge is far less work.

The DCH218 runs a plain bearing, which is the right call for doors of ordinary weight and traffic. Put real weight on a concealed hinge and cycle it hard, and a bearing hinge holds alignment longer. If the door is heavy, look at the heavy duty SOSS 208 Series or 212 Series instead, or add a third DCH218 leaf pair to spread the load rather than hanging the whole door on two.

No handing to specify. The DCH218 mortises symmetrically into the door edge and the jamb, so the same pair hangs a left-hand or right-hand door. What decides the swing is which side of the opening you rout the pockets into, not the hinge itself.

The Deltana DCH218 body is steel, offered in Brushed Nickel, Brushed Chrome, and Brushed Brass. If the specification calls for stainless steel, the SOSS invisible hinges are stainless: the 101SS (101SSUS) and the 203 Series (203SS) in light duty, and the 208 Series (208SS) and 212 Series (212SS) in heavy duty. Pick the SOSS series by the door thickness and weight, since the 208SS lists a 1 inch minimum door thickness and the 101SS a 1/2 to 3/4 inch minimum.

Three: Brushed Nickel, Brushed Chrome, and Brushed Brass. Since the hinge disappears when the door is shut, the finish only shows on the barrel when the door stands open. Match it to the pulls and lever on the same door if the opening sits in a public space; on a closet or a back-of-house panel, any of the three works.

The Deltana DCH218 is a concealed hinge that is not visible when the door is closed, and it is not supplied with a non-removable pin. On an out-swinging opening the usual reason for an NRP is that the hinge barrel is exposed on the secure side; a concealed hinge has no exposed barrel when the door is shut. The SOSS heavy duty invisible hinges, the 208 Series (208SS) and 212 Series (212SS), are the comparable concealed options when the door weight is the deciding factor.