Pamex DD01-KS8V Solid Brass Door Knocker with 160 Degree Viewer

The viewer on the DD01-KS8V fits a 1/2 inch hole. That's the common residential peephole bore, so if your door already has a 1/2 inch through-bore at eye height the viewer drops straight in. A larger existing hole won't work, and a smaller one has to be drilled out to 1/2 inch.

The Delaney 6" Door Knocker with 160 Degree Viewer, DLY-4001, is the nearest equivalent: same combined knocker-and-viewer format with the same 160 degree viewer angle. The Pamex DD01-KS8V measures 3-9/16" by 7-13/16" overall with a 3/4" projection, so if the existing door has a knocker footprint to match or cover, compare that plate size against the Delaney 6" series before ordering.

Pamex lists the DD01-KS8V as a residential product. For single-family entries, condo units, and apartment unit doors it's the right class of hardware. For high-traffic commercial entrances, spec a device carried under a commercial grade instead.

Overall size is 3-9/16 x 7-13/16 inches. On a door with a glass lite or a narrow flat stile, lay out that footprint on the solid face first, since the knocker plate needs the full area flat and unbroken. Doors with a decorative panel or applied molding at eye height usually won't take it.

The combined unit puts both on one plate through a single 1/2 inch bore, so it's one layout, one drilling, and one finish to match. Go with separate pieces when the peephole has to sit at a different height than the knocker, such as an ADA-height viewer on a unit door, or when the existing viewer stays and only the knocker is being replaced.

Delaney Hardware makes two: a 6 inch door knocker with 160 degree viewer and a 4 inch version. Both are the same combined knocker-plus-viewer concept as the Pamex DD01-KS8V, in a shorter plate if the Pamex 7-13/16 inch footprint is too tall for the door face you're working with.

For a residential unit-door fleet, yes, provided every door falls between 1-1/8 and 1-7/8 inches thick, which covers both the 1-3/8 and 1-3/4 inch doors you'll find mixed through older buildings. Order the same BHMA finish code across the block, 605, 613, or 619, and each door takes the same 1/2 inch bore, so the install is repeatable door to door.

They are the same product in two sizes: the DLY-400x10 is the 4" door knocker series and the DLY-4001 is the 6" series, both with a 160 degree viewer. The size decides which existing knocker footprint each one covers on a replacement, and how much flat door face each needs.

The Pamex DD01-KS8V viewer adjusts from 1-1/8" to 1-7/8" and fits a 1/2" bore, which spans the common residential entry door thicknesses in a mixed-age portfolio from one part number. The Delaney units, the 6" DLY-4001 and the 4" DLY-400x10, use the same 160 degree viewer angle, so the sight line matches across a mixed installation if the doors take different plate sizes.

The DD01-KS8V is a residential-rated brass unit, and the Delaney comparables, the 6" DLY-4001 and the 4" DLY-400x10, are the same knocker-with-viewer format rather than a rated commercial viewer. For a fire door opening in an institutional or multi-family building, specify a listed viewer rated for that door assembly rather than substituting any of these three.

Brass is the substrate. That's why the 605 bright brass version can be polished back if it dulls, and why the oil rubbed bronze will patina with handling rather than flake off a zinc casting.

The Pamex DD01-KS8V is offered in 613 oil rubbed bronze, 605 bright brass, and 619 satin nickel over solid brass, so it can be matched to lever and lockset finishes already on the opening. The Delaney comparables, the 6" DLY-4001 and the 4" DLY-400x10, are the same knocker-with-viewer type and are selected on plate size rather than a matching three-finish range.