Deltana DKV630 Door Knocker with Viewer, Victorian

One unit, one box. The DKV630 is a combined knocker and viewer, and each box ships with the glass lens viewer included, so a single bore through the door gets you both. It's sold and priced each, so one per door.

The DKV630 is a 6 inch knocker, so measure the flat width you have between the door edge and any glass or panel moulding before you commit. On a slab with a narrow stile or a tight glass surround, Delaney's 4 inch door knocker with viewer is the smaller footprint option.

The Delaney 6" Door Knocker with 160 Degree Viewer, part DLY-4001, is the direct size match. Both are 6-inch knockers with a built-in peephole in a single door-face unit, so the bore and knocker footprint occupy the same real estate on the door. The difference is the optic: the DKV630 uses a glass lens viewer with a 180 degree view range, while the DLY-4001 is a 160 degree viewer. The DKV630 is solid brass and comes in nine finishes including Oil Rubbed Bronze, Polished Chrome and Antique Brass; the Delaney is catalogued by its 6" Door Knocker series. For a property manager matching what is already hung on a row of entry doors, either lands in the same 6-inch envelope.

Step down to the Delaney 4" Door Knocker with 160 Degree Viewer, part DLY-400x10. It is the 4-inch version of the same knocker-plus-peephole format, which gives back two inches of vertical face on a narrow-stile or glass-front entry where the Deltana DKV630 at 6 inches would crowd the stile or run into the lite. The viewer is 160 degrees on the Delaney; the DKV630 gives 180 degrees. Contractors sizing a knocker to a stile should measure the flat face available before committing, since both units mount through the door face.

180 degrees. You get the full sweep of the landing or porch, including someone standing tight against the door frame to either side, rather than just the cone straight ahead.

Solid brass throughout, not a plated zinc casting. That's the material a knocker-viewer needs on an exterior door, since the barrel passes through the slab and sits in the weather on the outside face.

Nine: PVD Polished Brass, Polished Brass, Antique Brass, Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black. If you're matching a building's existing entry sets, the PVD Polished Brass is the one to pick for brass that stays bright without polishing, since the standard Polished Brass is a living finish that will patina.

Not as a like-for-like swap. The DLY-400x10 is a 4" Door Knocker, while the DKV630 is a 6-inch unit, so replacing one with the other on an existing door leaves a different footprint and will not cover the same paint or wear outline. Viewer coverage also differs: 160 degrees on the Delaney against 180 degrees on the Deltana. If the goal is replacing a DKV630 in kind, the 6-inch DLY-4001 is the size-matched peer; the 4-inch is a different opening decision, not a drop-in.

The Deltana DKV630 carries a 180 degree view range through a glass lens viewer, against 160 degrees on both Delaney units, the 6-inch DLY-4001 and the 4-inch DLY-400x10. For a multi-family or hospitality buyer standardizing entry doors, the practical effect is how far toward the wall plane an occupant can see before opening. All three are single door-face assemblies combining knocker and peephole, so the wider view does not cost a second bore.

The Deltana DKV630 is solid brass, with brass called out as both the product material and the substrate, and it is offered in nine finishes: PVD Polished Brass, Polished Brass, Antique Brass, Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome and Paint Black. That range covers matching an existing lockset or hinge finish across a fleet of entries. The Delaney comparables, DLY-4001 at 6 inches and DLY-400x10 at 4 inches, are identified by knocker size and 160 degree viewer rather than by a brass substrate, so specify by material when the finish match across the door is what matters.

The Deltana DKV630 is built for a maximum door thickness of 1-3/4 inches, which covers standard residential entry slabs. On a thicker slab - a heavy custom entry or a door with an applied panel - the viewer barrel will not reach through to seat the outside and inside halves, so the DKV630 is the wrong choice regardless of finish. Confirm the slab thickness at the bore location before ordering, and treat the 1-3/4 inch ceiling as the deciding spec rather than the knocker size.

That depends on the bore you already have and the knocker's own fixings, which aren't the same footprint as a bare viewer. The DKV630 combines the viewer into the knocker body, so plan on the knocker covering the door face around the sight hole rather than assuming a straight swap into an existing peephole bore.

The DKV630 is designated residential, and it is an exterior door trim item rather than a rated or graded security device. It suits apartment, condo and single-family entries where a knocker and peephole in one unit is the goal. A property manager fitting out a residential portfolio can specify it directly; a facility with graded entrance requirements should be spec'ing to the door's hardware schedule instead. The Delaney comparables, the 6-inch DLY-4001 and 4-inch DLY-400x10, are the same class of knocker-with-viewer part.