International Door Closers DC-2001 Series 7/8" Length Mortise Dummy Cylinder, 1-5/32" Diameter

It fills the cylinder hole without operating anything. The DC-2001 is a dummy, so there is no keyway that turns a cam and no locking action, it just gives the door the look of a keyed cylinder and closes off the prep. Common uses are the inactive leaf of a pair, a storefront door where the lock was removed, or a push/pull door that still has a cylinder hole in the rail.

Yes. The body measures 1-5/32 inch in diameter, which is the standard mortise cylinder diameter used on aluminum storefront and commercial doors, so it drops into an existing mortise cylinder prep. Length is 7/8 inch, a short single-length body.

No. There is no functioning plug or cam on a dummy, so it cannot be keyed, rekeyed, or made to operate a latch. If the opening needs to lock, order a keyed mortise cylinder in the same 1-5/32 inch diameter instead and specify the cam and length your lock requires.

No, it is a single 7/8 inch body. If the door rail or lock case is deeper and needs a 1-1/8 inch or 1-1/4 inch mortise cylinder length, this one will sit short and you need a longer dummy. Measure the depth of the cylinder hole from the face of the door before ordering.

For holes in a 1-5/32 inch mortise prep, yes. The DC-2001 plugs the opening, keeps weather and fingers out of the rail, and looks like the cylinders on your other doors. Order the finish that matches the existing door rails, aluminum, duronodic bronze, or black, and buy one per opening.

Zinc. That is fine for an interior or protected exterior storefront application where the part is cosmetic and takes no key wear, though on a coastal or heavily weather-exposed entrance a brass-bodied cylinder holds up better.