Emtek MP6-TUPKDUSTCVR Dust Box (For Use with Emtek Strikes) - Key in Passage & Privacy Sets

It's the little brass cup that sits behind the strike plate in the door jamb, lining the hole the latch bolt drops into. Emtek supplies it for use with Emtek strikes on key-in-knob passage and privacy sets. It keeps the mortised pocket in the frame clean and gives the latch a finished bore to enter instead of raw wood. It is not a lock, not a latch, and not a strike plate on its own.

Yes, one part covers both. The Emtek passage and privacy tubular sets it goes with are rated for 1-3/8 to 1-3/4 inch doors, so you don't order a different dust box by door thickness. Those are the two common residential door thicknesses, so a mixed building of interior and entry-weight doors takes the same part throughout.

It's specified for use with Emtek strikes. Emtek calls it out for their own key-in passage and privacy sets, and dust box depth and outside dimensions have to match the strike's throat and the mortise cut behind it. If you're replacing a lost or damaged dust box behind an Emtek strike, this is the part; for another manufacturer's strike, order that manufacturer's dust box.

Both. The MP6-TUPKDUSTCVR is specified for key-in passage and privacy sets, and the function data on it is privacy/bed/bath, non-keyed tubular. If you're fitting a bedroom or bath privacy knob or lever, or a passage set with no lock at all, it's the same dust box.

No. The Emtek tubular passage and privacy latch is adjustable between 2-3/8 and 2-3/4 inch backset, and the dust box sits in the jamb, not the door, so backset doesn't come into it. Backset is measured from the door edge to the center of the bore; the dust box is on the other side of the gap entirely.

You need one per latch bore in the jamb, so one per passage or privacy door you want finished that way. Emtek sells the MP6-TUPKDUSTCVR as a replacement part, which is how it usually gets ordered: making up a shortfall on a punch list, or replacing one lost during a rework. Order by door count, not by pair.

Emtek lists it as residential. For an apartment turn, a single-family remodel, or hotel-style guest room interior doors on Emtek trim it's the right part. For a commercial corridor or a fire-rated opening running mortise or cylindrical Grade 1 hardware, you're in a different class of product and this tubular passage and privacy accessory isn't part of that assembly.

The Emtek tubular passage and privacy sets use a 2-1/8 inch cross bore in the door face, with the latch backset adjustable to 2-3/8 or 2-3/4 inches. That's the standard bore most residential prep already has, so an existing bored door usually takes the set without redrilling; the jamb side is where the dust box and strike mortise go.

The latch faceplate on these Emtek sets comes round corner or square corner, and the MP6-TUPKDUSTCVR is the single dust box called out for the passage and privacy sets either way. Faceplate corner style is a door-edge detail; the dust box is mortised into the jamb behind the strike.

Brass. That matters in a jamb where the strike pocket sees moisture or where you're matching solid brass Emtek trim, since brass won't rust the way a stamped steel cup can.