Emtek Radius Passage Latch

Yes. The Emtek Radius passage latch is built for the standard 2-1/8 inch cross bore, which is what almost every pre-bored interior door already has, and it works on doors 1-3/8 to 1-3/4 inches thick. That covers both the 1-3/8 inch interior doors common in older homes and 1-3/4 inch doors. If your door is already drilled for a knob or lever, no new boring is needed.

It's the latch itself, the mechanism that mortises into the edge of the door and throws the bolt into the frame. It is not the frame-side strike plate. If what you need is the plate screwed to the jamb, that's a different part, such as the Kwikset 80318 full round adjustable strike or the Deltana SP2753 deadbolt strike plate.

That's exactly what this is for. The Radius passage latch is sold as a replacement part on its own, so you can pull the failed latch out of the door edge and drop this one in while keeping the existing knobs or levers and rosettes. Confirm your bore is 2-1/8 inches and your backset is 2-3/8 or 2-3/4, and order the finish to match the faceplate you're pulling out.

They are both latch parts, but they are not interchangeable in the same opening. The Emtek Radius Passage Latch is a brass latch with an adjustable 2-3/8 inch or 2-3/4 inch backset, a 2-1/8 inch cross bore, a 1-3/8 inch to 1-3/4 inch door thickness range, and a faceplate available in round or square corner, so it is the correct latch to reinstate an Emtek passage knobset or leverset. The Kwikset KWI-81825 is catalogued as a 6 Way Adjustable Deadlatch. If the door carries an Emtek passage set and the latch has failed or the backset was cut wrong, order the Emtek Radius Passage Latch so the latch tailpiece and hub match the Emtek chassis already on the door.

No. Those are two different parts on opposite sides of the opening. The Emtek Radius Passage Latch is the latch that goes into the edge bore of the door itself, with an adjustable 2-3/8 inch or 2-3/4 inch backset and a 2-1/8 inch cross bore. The Kwikset KWI-80318 Full Round Adjustable Strike is a deadbolt strike plate, which mounts in the jamb. A buyer replacing the piece that retracts when the knob is turned needs the Emtek Radius Passage Latch; a buyer replacing the plate the bolt lands in on the frame is looking at the Kwikset part.

The Emtek Radius Passage Latch is a passage latch for the door edge, so it will not serve a deadbolt. For a deadbolt strike plate, the Deltana SP2753 is a steel strike plate measuring 2-3/4 inch by 1-1/4 inch with a deadbolt function, and the Kwikset KWI-80318 Full Round Adjustable Strike is a deadbolt strike plate in a round format. Choose the Deltana for a conventional rectangular jamb prep and the Kwikset round strike where the jamb is bored rather than mortised for a rectangular plate.

Match whatever is already mortised into the door edge. A door prepped by a router jig typically has a radius (round corner) pocket; a door prepped by hand or by a factory chisel prep has square corners. The Radius passage latch covers both faceplate styles, so you don't have to re-chisel the edge either way.

It's a residential-duty part. Emtek lists the Radius passage latch as residential, and it carries no commercial grade rating, so for an office corridor, school, or multi-family common area you want a commercial cylindrical latch instead. For apartment interiors and single-family doors it's in its element.

The Emtek Radius Passage Latch is the brass door-edge latch itself, adjustable to a 2-3/8 inch or 2-3/4 inch backset with a round or square corner faceplate. If the jamb prep also needs the metal cup that lines the bolt pocket behind the strike, that is a separate item: the Kwikset KWI-81640 Strike Box and the Kwikset KWI-81231-001 Metal Strike Dust Box are both catalogued for that role under a deadbolt strike plate function. Contractors reworking an old jamb often order the latch and a strike box together rather than expecting one part to cover both.

The Emtek Radius Passage Latch is specified by backset, cross bore and faceplate corner, not by jamb prep: adjustable 2-3/8 inch or 2-3/4 inch backset, 2-1/8 inch cross bore, and a round or square corner faceplate for a 1-3/8 inch to 1-3/4 inch door. The jamb side of an ASA prep is a separate part, and the Codelocks CDL-ASA is an ASA strike plate in stainless steel. An installer facing an ASA-prepped frame should match the latch to the door bore and the strike to the frame prep as two separate line items.

Twelve, and all twelve are available on both backsets: Oil Rubbed Bronze (US10B), Polished Nickel Lifetime (US14), Satin Nickel (US15), Pewter (US15A), Flat Black (US19), Polished Chrome (US26), Polished Brass Lifetime (US3), Unlacquered Brass (US3NL), Satin Brass (US4), French Antique (US7), Medium Bronze (MB), and Tumbled White Bronze (TWB). Only the faceplate shows once the latch is installed, so match it to the door edge hardware on the rest of your openings.

They sit on opposite halves of the opening and do different jobs. The Emtek Radius Passage Latch is the brass latch installed in the door edge, adjustable between a 2-3/8 inch and 2-3/4 inch backset for doors 1-3/8 inch to 1-3/4 inch thick, and it comes in finishes including Oil Rubbed Bronze (US10B), Satin Nickel (US15), Flat Black (US19) and Polished Chrome (US26) so the faceplate matches the trim. The Kwikset KWI-81640 is a strike box, catalogued with a deadbolt strike plate function, and it is concealed in the frame mortise where nothing about its appearance matters.