Deltana BBC20-REPL Replacement Bell Button Mechanism

The BBC20-REPL is just the button mechanism for the Deltana BBC20 bell button, not a complete doorbell assembly. If the plate and trim on the door are still good and only the button has stopped making contact, this is the part that puts it back in service without pulling the escutcheon off the jamb. It is sold each.

Only the BBC20. Deltana builds this mechanism as the replacement for that specific bell button, so it is not a universal button insert. If the plate on your door is another Deltana model or another brand entirely, this one is the wrong part.

Depends on what failed and what you have. If the plate is a Deltana BBC20 and the trim is sound, the BBC20-REPL mechanism is the cheaper repair and it keeps the existing finish and mounting holes on the jamb. If the plate is damaged, the finish has gone, or it is a different brand, buy a complete unit instead: the Emtek 2400 comes as a doorbell with plate and button on a regular rosette, and the 2401, 2402 and 2403 are the same thing in rope, oval and rectangular rosettes. Swapping to a complete unit means new mounting, so check what is behind the existing plate first.

The Deltana BBC20-REPL is the button mechanism on its own, sold as a replacement for the BBC20. If the escutcheon plate is cracked, corroded, or has torn out of the jamb, a complete unit is the right call: the Emtek 2400 American Classic brass doorbell ships as plate and button together with a regular rosette. Ordering the complete unit means the plate, button, and mounting all match; ordering the BBC20-REPL means you are reusing the plate already on the opening.

Treat them as separate systems. The Emtek 2400, 2401, 2402, and 2403 are sold as complete brass doorbells with plate and button, not as loose button mechanisms, so there is no Emtek part in that group intended to drop into a Deltana plate. The BBC20-REPL is the mechanism made for the BBC20 opening. If you are keeping the existing Deltana plate, stay with the BBC20-REPL; if you are willing to change the plate, move to a complete Emtek unit.

Nine finishes: PVD Polished Brass, Polished Brass, Antique Brass, Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black. Match the replacement to the finish already on the BBC20 plate rather than to the original order, since an exterior brass plate that has been on a door for a few seasons will not read the same as a new one. PVD Polished Brass and Polished Brass are separate choices here, so check which one you have before picking.

It is a commercial-grade exterior part. Deltana classes the BBC20-REPL as commercial and as exterior hardware, and the mechanism itself is steel. That is the right spec for a lobby or main entry that gets pressed all day, as opposed to a residential button on a house that sees a handful of presses a week.

Yes, as long as the buttons are all BBC20. The mechanism is the same part across the range; only the finish changes, and you order that to match each door. Buildings that were fitted out at once usually run one finish throughout, so a small shelf stock of a single finish covers the fleet. It is sold individually, so you buy exactly the count you need.

No. It is the button mechanism alone. The plate stays on your door, and the low-voltage wiring and the chime unit inside the building are separate and are not part of this. If you need the button and the plate together as one assembly, look at a complete doorbell such as the Emtek 2400 series instead.

Across the Emtek American Classic and American Designer brass doorbells there are four rosette shapes: the 2400 in the Regular series, the 2401 in the Rope series, the 2402 in the Oval series, and the 2403 in the Rectangular series. Rectangular and oval suit a narrow brick mould or a flat casing; regular and rope are round. Pick by what the casing on the jamb will accept.

If the doors already carry Deltana BBC20 buttons, the BBC20-REPL keeps the existing plates and jamb prep in place, so the appearance stays uniform across the fleet and nothing new gets drilled. Where a plate is beyond reuse, a complete Emtek unit such as the 2400 with the regular rosette brings its own plate and button. Mixing the two approaches on the same building will show, since the Deltana plates and the Emtek rosettes are different parts.

Steel, both the material and the substrate. The brass and nickel names in the options are the plated finish over that steel, not solid brass. Worth knowing if you are matching it against a solid brass plate, since plated and solid stock can weather differently over time on an exposed entry.

The Deltana BBC20-REPL mechanism comes in nine finishes including polished brass, PVD polished brass, antique brass, oil rubbed bronze, brushed nickel, antique nickel, polished chrome, brushed chrome, and paint black, so a brass match is available without changing the plate. If you are replacing the whole assembly instead, the Emtek 2400, 2401, 2402, and 2403 are brass doorbells with plate and button. The difference is whether you are matching one button to an installed plate or matching a new complete unit to the rest of the entry hardware.