Deltana DKR75 Door Knocker, Victorian Rope

The DKR75 mounts on 4-7/8 inch centers, with an overall length of 7-1/2 inches. That spacing is what decides whether it lands over holes already drilled in the door. If your existing knocker used a different spread, you'll be drilling fresh and possibly covering old holes, so measure the old fasteners before pulling it off.

Deltana lists the DKR75 as residential hardware. It suits a house, a townhome, or a unit door in multi-family. For a commercial entrance or an institutional building where the knocker may take abuse and is often specified alongside a viewer, the Trimco 620 contemporary knocker is the one to look at, since Trimco offers it with an optional viewer and engraving.

Height is the constraint. At 7-1/2 inches overall with fasteners on 4-7/8 inch centers, the DKR75 needs a solid run of rail or stile that tall and it has to land clear of any glass. On a door with a large lite and only a narrow stile, a shorter knocker works better, and the Emtek 86060 at 4 inches is the compact option in that case.

The Emtek 2620 is a solid brass door knocker in an urn style, so it matches the DKR75 on material - the DKR75 is solid brass as well - while carrying a different decorative shape. The DKR75 is a Victorian rope pattern at 7-1/2 inches overall with a 4-7/8 inch center-to-center mounting spread; if that spread is what the door is already drilled for, confirm it before treating the 2620 as a drop-in, since the two are matched on material and function rather than on hole pattern.

The Emtek 86060 is a 4 inch bronze door knocker with a ring pull, built in Emtek's Sandcast Bronze series. That gives you a hanging ring rather than the hinged rope-pattern striker of the Deltana DKR75, and it is a sandcast bronze piece rather than the solid brass of the DKR75. It is also a 4 inch knocker against the DKR75's 7-1/2 inch size, so it reads much smaller on a full-height entry door.

The Trimco 620 is a contemporary style door knocker in Trimco's 620 Series, and it can be ordered with an optional viewer and engraving. That is the substitution when the rope-and-Victorian detailing of the Deltana DKR75 does not suit the door, and the viewer option lets one cutout carry both the knocker and the peep sight instead of prepping two.

Nine: polished brass, PVD polished brass, antique brass, oil rubbed bronze, brushed nickel, antique nickel, polished chrome, brushed chrome, and paint black. For a property manager matching an entry set across a building, the oil rubbed bronze and brushed nickel are the two that most commonly line up with existing lever and lockset finishes; if the doors already carry a lacquered polished brass entry set, the PVD version will hold its shine longer in sun and rain than the standard lacquer.

Solid brass through the body, not a plated zinc casting. The finish is applied over that brass, which is why the polished brass version is offered both as a lacquered polished brass and as a PVD polished brass, PVD being the harder coating for a door taking full weather.

Four different looks, not four grades. The DKR75 is a rope-twist Victorian pattern in solid brass at 7-1/2 inches. Emtek's 2620 is a solid brass urn style. Emtek's 86060 is a sandcast bronze 4 inch knocker with a ring pull, so it reads heavier and more rustic and is the smallest of the group. Trimco's 621 is a colonial pattern and the 620 is contemporary. Pick on the door's period: rope and colonial for traditional millwork, the Trimco 620 for a flat modern slab.

The DKR75 is a knocker only, in the Victorian rope pattern. When the opening needs a combined knocker and peep sight, the Trimco 620 is the piece to look at - it is offered with an optional viewer, and with optional engraving if the unit or suite number is going on the plate. That combination matters most on multi-family and hospitality doors where the viewer is required anyway.

The Trimco 621 is a colonial style knocker in Trimco's 621 Series. The Deltana DKR75 is a Victorian rope pattern in solid brass, 7-1/2 inches, and it ships one piece per box with its fasteners. Both are traditional styling, so they are easy to mistake for each other in a spec, but the DKR75 carries the twisted rope border and the 621 carries colonial detailing - if a property is standardizing a look across several entries, pick one family and stay in it.

The Deltana DKR75 is solid brass, and it comes in finishes including polished brass, PVD polished brass, antique brass, oil rubbed bronze, brushed nickel, antique nickel, polished chrome, brushed chrome and paint black. The Emtek 2620 is also solid brass. The Emtek 86060 is a sandcast bronze piece. If the rest of the entry hardware is brass and being finish-matched, that base metal difference is what decides the choice.

Treat it as a new install rather than a swap. The DKR75 mounts on a 4-7/8 inch center-to-center spread at a 7-1/2 inch overall size, while the Emtek 86060 is a 4 inch ring pull knocker - a different form entirely, so the existing holes are unlikely to line up and the smaller body may not cover them. If the door is already bored for the DKR75, staying with the DKR75 in a different finish is the cleaner path.

Each. One knocker per box, priced per unit, so ordering ten for ten unit doors means a quantity of ten.