Emtek 8378 Quincy Deadbolt - C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$136.00
$111.56
Emtek Emtek 8378 Quincy Deadbolt - Classic Brass - Double Cylinder EMTEK-8378

Emtek 8378 Quincy Deadbolt - Classic Brass - Double Cylinder

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Model: 8378-US26
From the Brass Collection
$136.00
$111.56
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$136.00
$111.56
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Emtek 8378 Quincy Deadbolt - Classic Brass - Double Cylinder

  • Schlage® C Keyway
  • Single Cylinder Deadbolt Includes extension collar for thin doors
  • Standard Door Prep and Installation
  • Solid Brass Cylinder, Housing, Collar, Thumbturn, and Rosette
  • Hardened Steel Bolt
  • Heavy Gauge Steel Understrike
  • Brass Trim Strike Shipped with Every Deadbolt
  • Handing Not Required
  • Standard door thickness of 1-3/4". Specify if thicker. EMPowered™ fits door thickness up to 2-1/4".
  • Standard latch is for 2-3/8” backset. Specify 2-3/4”backset if required.

 

Weiser® (WR5) Keyway

  • Specify by adding “W” to the beginning of product code.
  • No upcharge for cylinder substitution. Can be keyed into existing Weiser® system

 

Specifications:

  • Backset: 2-3/8" or 2-3/4"
  • Cross Bore: 2-1/8"
  • Edge Bore: 1"
  • Door Thickness: 1-3/8" to 2"
  • Keyway: Schlage C
  • Material: Brass

 

Manufacturer Resources:

Product Specs

Subcategory:
Deadbolts
Collection:
Brass
Product Type:
Deadbolts
Product Group:
Mechanical Locks
Product Subgroup:
Deadbolts
Commercial/Residential:
Residential
Lock Function:
Deadbolt
Keyed:
Yes
Lock Type:
Tubular
Series:
Quincy
Theme:
American Classic
Electronic:
No
Keyed Function:
Double Cylinder
Handle Type:
Deadbolt
Product Attribute:
Deadbolts
MAP Policy:
Yes
Product Model:
8378
Product Function:
Double Cylinder
Product Style:
American Classic
Product Material:
Brass
Product Category:
Mechanical Locks
Product Substrate:
Brass
Department:
Door Hardware

Emtek 8378-US26 – Frequently Asked Questions

1) Will the Emtek 8378 Quincy deadbolt fit a 1-3/4 inch exterior door?
Yes. The Quincy 8378 deadbolt covers doors from 1-3/8 inches up to 2 inches thick, and 1-3/4 inches is the standard build it ships for. Anything thicker than standard needs to be called out on the order, and there is a Door Thickness field on the order form for exactly that. Prep is the usual 2-1/8 inch cross bore with a 1 inch edge bore, so a door already bored for a tubular deadbolt takes it without new holes.
2) What is the difference between a double cylinder deadbolt and a single cylinder, and should I put one on my front door?
A double cylinder deadbolt takes a key on both sides, with no thumbturn inside. The Quincy 8378 is the double cylinder version, which is what people specify on doors with glass beside or in them, so nobody can reach through a broken pane and turn the bolt. The trade-off is that you cannot get out without a key in hand, and many local codes restrict double cylinder hardware on a required egress door, so check your jurisdiction before you spec it for a bedroom or exit path. If you want a key outside and a turn inside, that is the single cylinder configuration instead.
3) Can the Emtek Quincy deadbolt be keyed to match my existing Schlage keys?
It ships with a Schlage C keyway as standard, so it can be keyed into an existing Schlage C system. If your building runs on Weiser, order the Weiser WR5 keyway version instead, which keys into an existing Weiser system at no cylinder upcharge. On the order form you pick keyed alike or keyed different, and there is a field to enter a key code if you want it cut to a code you already carry.
4) What backset do I need for the Quincy 8378, and does it matter which one I order?
It does matter, and the backset is a required choice. Standard is 2-3/8 inches, with 2-3/4 inches available and both offered on the order form. Measure from the door edge to the center of the bore hole on the door you are working on. Getting it wrong means the bolt does not line up with the hole in the frame. Handing is not a factor here, so a deadbolt ordered for one door works on a left or right hand opening.
5) Will the Quincy deadbolt work on a thick 2-1/4 inch door?
No. The Quincy 8378 covers 1-3/8 to 2 inches. Past 2 inches you are outside the range and need a different lock. For a thicker opening, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock is rated 1-3/4 to 2-1/4 inches.
6) What is a direct alternative to the Emtek 8378 Quincy double cylinder deadbolt for a keyed-both-sides opening?
The Emtek 8378 Quincy is a double cylinder deadbolt in a solid brass tubular body, keyed on both faces with a Schlage C keyway as standard. If you want another double cylinder deadbolt for the same keyed-both-sides opening, the Baldwin Reserve Contemporary Round Deadbolt and the Baldwin Reserve Contemporary Square Deadbolt are both double cylinder, the Dexter DB1000 Series is a Grade 1 double cylinder deadbolt for doors 1-3/8 to 1-7/8 inch thick, and the Design Hardware D1 Series is a Grade 1 extra heavy duty double cylinder deadbolt for 1-3/4 inch doors. The Quincy is the decorative brass route in ten finishes from Oil Rubbed Bronze to Unlacquered Brass; the Dexter and Design Hardware units are the graded commercial route.
7) I need an ANSI Grade 1 double cylinder deadbolt for a commercial entry - what should I use instead of the Emtek 8378 Quincy?
The Emtek 8378 Quincy is a residential solid brass deadbolt. For a job where the spec calls out an ANSI grade on a double cylinder deadbolt, the Dexter DB1000 Series double cylinder is Grade 1 and covers doors 1-3/8 to 1-7/8 inch, and the Design Hardware D1 Series double cylinder is Grade 1, extra heavy duty, for 1-3/4 inch doors. The Delaney LU Series double cylinder is Grade 2 in a Stainless Steel (US32D) finish, and the Callan Model 210S is a Grade 3 double cylinder. All four are keyed on both faces the way the Quincy is.
8) The fire code will not let me put a key on the inside - what deadbolt do I use instead of the Emtek 8378 Quincy?
The Emtek 8378 Quincy is keyed on both sides, so an egress door that must open without a key needs a different function. A cylinder-by-thumbturn deadbolt turns from the inside by hand: the Dexter DB1000 Series single cylinder is Grade 1 for 1-3/8 to 1-7/8 inch doors, the Hager 3115 is a Grade 2 cylinder by thumbturn on the same Schlage C keyway the Quincy uses as standard, and the Cal-Royal LSD is Grade 3 with an ADA ergonomic thumbturn for 1-3/8 to 1-3/4 inch doors. If nothing on the inside should be keyed at all, the Arrow E60 is a non-keyed Grade 2 exit deadlock, blank plate by thumbturn.
9) Which deadbolts key into the same Schlage C system as the Emtek 8378 Quincy?
The Emtek 8378 Quincy ships with a Schlage C keyway as standard, so it drops into an existing Schlage C master key system. Among other lines on the same keyway, the Hager 3115 is a Grade 2 cylinder by thumbturn deadbolt with a Schlage C keyway, the Hager 3214 is a Grade 2 double cylinder with Schlage C, the Hager 3118 is a Grade 1 classroom deadbolt with Schlage C and a 6-pin cylinder, and the Dormakaba D900 small case mortise deadbolt is supplied keyed different with SC keyways. If the building runs on Weiser instead, the Quincy is also built with the Weiser WR5 keyway and keys into an existing Weiser system with no upcharge for the cylinder substitution.
10) My door is thicker than 2 inches - what double cylinder deadbolt fits when the Emtek 8378 Quincy does not?
The Emtek 8378 Quincy covers door thicknesses of 1-3/8 to 2 inches, with a standard build for 1-3/4 inch doors. For a heavier door, the Corbin Russwin DL3011 Grade 1 cylindrical deadlock is rated for 1-3/4 to 2-1/4 inch doors. If the door falls inside the Quincy's range but you want a double cylinder peer with its own published range, the Deltana 7312KA2 is a Grade 3 double cylinder deadbolt for 1-3/8 to 2 inch doors, and the Dexter DB2000 Series double cylinder is Grade 2 for 1-3/8 to 1-3/4 inch doors.
11) The opening needs a fire rated deadbolt - what should I specify instead of the Emtek 8378 Quincy?
For a fire rated opening, the Hager 3214 Grade 2 double cylinder deadbolt with Schlage C keyway carries a fire rating and covers 1-3/8 to 1-3/4 inch doors, which keeps the keyed-both-sides function of the Emtek 8378 Quincy. If a thumbturn inside is acceptable, the Hager 3215 single cylinder with a 1 inch throw and the Hager 3118 Grade 1 classroom deadbolt are both fire rated over the same 1-3/8 to 1-3/4 inch range, and the Cal-Royal CRB800 is a heavy duty single cylinder deadbolt with a UL 3-hour fire rated latch.
12) Is the Emtek Quincy deadbolt solid brass or plated?
Solid brass through the cylinder, housing, collar, thumbturn and rosette, with a hardened steel bolt and a heavy gauge steel understrike behind the brass trim strike. The substrate is brass rather than a zinc casting with a brass coating, which is what holds up on a coastal or high-use exterior door. Ten finishes are offered, from unlacquered brass that patinas naturally to flat black, polished chrome and oil rubbed bronze.
13) What else do I need to buy to install the Emtek Quincy deadbolt?
Nothing extra for a standard install. Every Quincy deadbolt ships with a brass trim strike and a heavy gauge steel understrike, so the frame side is covered in the box. It goes into standard door prep, meaning the 2-1/8 inch cross bore and 1 inch edge bore most doors already carry. What you do specify at order time is backset, keyway, keying, and door thickness if the door is not 1-3/4 inches.
14) I need a double cylinder deadbolt for a glass front door but the Emtek finish does not match the rest of the building. What else works?
Several double cylinder options cover the same job. The Baldwin Reserve double cylinder comes in a contemporary round or square rose, and Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder. For a graded commercial alternative, the Design Hardware D1 Series is Grade 1 double cylinder for 1-3/4 inch doors, the Dexter DB2000 is Grade 2 for 1-3/8 to 1-3/4 inch doors, and the Deltana 7312KA2 is a Grade 3 double cylinder covering 1-3/8 to 2 inch doors, the same thickness span as the Quincy.
15) Can I standardize a whole building on the Emtek Quincy deadbolt and have every unit on one key?
Yes, within the keying you order. Pick keyed alike to run a set of doors on the same key, or keyed different for individual units, and both keyway choices support it: Schlage C as standard, or Weiser WR5 for buildings already on a Weiser system. If you already have a key code in your records, it can be cut to that code. Same ten finishes across both keyways, so the hardware looks consistent unit to unit regardless of which cylinder you spec.
16) Does the Emtek 8378 Quincy replace a mortise deadbolt?
Not directly. The Emtek 8378 Quincy is a tubular deadbolt that goes into a bored door prep, a 2-1/8 inch cross bore with a 1 inch edge bore. A door with a mortise pocket cut into the edge needs a mortise unit: the Dormakaba D900 is a small case mortise deadbolt, cylinder by thumbturn, keyed different with SC keyways, the Codelocks CL2210 is an electronic mortise deadbolt, and the DynaLock 1300 Series is a heavy duty mortise electric deadbolt. The International Door Closers DH-1821 hook bolt deadlock with a flat faceplate is another edge-mounted option.
17) Is the Baldwin Reserve deadbolt spacer a substitute for the Emtek 8378 Quincy deadbolt?
No. The Baldwin Reserve 8BR0618001 is a deadbolt spacer, a part that goes with a double cylinder deadbolt rather than a lock in itself. The Emtek 8378 Quincy is the complete double cylinder deadbolt: solid brass cylinder, housing, collar, thumbturn and rosette, a hardened steel bolt, a heavy gauge steel understrike and a brass trim strike with every unit. The same caution applies to the BEST 8T T Series tubular deadbolt tube component, which is the tube portion of a lock, and the Arrow 460, which is a mortise lock strike for latchbolt and deadbolt functions with a straight lip. If you are replacing a lock rather than a piece of one, the Quincy or a full deadbolt like the Callan 210S Grade 3 double cylinder is what you want.
18) What is the difference between the Emtek 8378 Quincy and a Corbin Russwin DL3211 deadlock?
They solve different openings. The Emtek 8378 Quincy is a residential tubular double cylinder deadbolt in solid brass, keyed on both faces, offered in ten finishes and in an American Classic style. The Corbin Russwin DL3211 is a Grade 1 cylindrical deadlock, cylinder by blank, for 1-3/4 inch doors, so the inside face carries no key and no turn at all. The Corbin Russwin DL2211 is the same cylinder by blank arrangement in a classroom function for 1-3/4 inch doors. Cylinder by blank is for a door you want secured from one side only; the Quincy is for a door that has to be operated by key from inside and outside.
19) I want keypad or fob entry instead of a keyed deadbolt like the Emtek 8378 Quincy - what are my options?
The Emtek 8378 Quincy is a mechanical deadbolt with no electronics, keyed on both sides. If the opening should open without a key in hand, the Delaney KP400 is a Grade 2 electronic deadbolt with a programmable remote, the Dormakaba Saffire LX-D is an RFID electronic deadbolt with BLE and an electronic lock override, the Dormakaba Nova-D is an RFID multihousing smart electronic deadbolt, and the Codelocks CL2200 is a medium duty electronic surface deadbolt in a brushed steel finish. For a code-entry unit that is not electronic, the Codelocks CL200 is a light duty surface deadbolt with key override.
20) The door is bored on one side only - can I still use the Emtek 8378 Quincy?
The Emtek 8378 Quincy needs a standard door prep bored through: a 2-1/8 inch cross bore and a 1 inch edge bore, with a cylinder on each face. For a door prepped on one side only, the Callan Model 205S is a Grade 3 one-sided half-bore deadbolt. If the door is bored through but you only want a key on the outside, the Cal-Royal CB160 is a Grade 2 single cylinder deadbolt with a tamper-resistant cylinder guard and the Bravura 310B Elite is a Grade 2 traditional round cylinder by thumbturn deadbolt.
21) What is a decorative brass alternative to the Emtek 8378 Quincy deadbolt for a residential entry?
The Emtek 8378 Quincy is a solid brass double cylinder deadbolt in an American Classic style, offered in finishes including Polished Brass Lifetime (US3), Unlacquered Brass (US3NL), Satin Brass (US4), French Antique (US7), Pewter (US15A) and Polished Chrome (US26). On the decorative side, the Baldwin Estates 8011 is a contemporary 1-5/8 inch double cylinder deadbolt in an entrance function, and the Baldwin Reserve Contemporary Round and Contemporary Square deadbolts are both double cylinder. The Baldwin units are contemporary trim; the Quincy is the traditional American Classic profile.
22) I need a deadbolt that takes an interchangeable core - what works where the Emtek 8378 Quincy does not?
The Emtek 8378 Quincy ships with a solid brass cylinder on a Schlage C or Weiser WR5 keyway, which is a conventional cylinder rather than a core you can pull and swap. For a small format interchangeable core program, the Arrow E61 is a Grade 2 single cylinder deadlock with SFIC prep supplied less core for 1-3/8 to 1-3/4 inch doors, the Deltana CL200LAIC is a Grade 2 single deadbolt with interchangeable core and a 2-3/4 inch backset, and the Delaney LM Series is a Grade 1 single cylinder less core deadbolt in Dull Chrome (US26D).
23) If I do not know the backset on the door, is there a deadbolt that adjusts, unlike the Emtek 8378 Quincy?
The Emtek 8378 Quincy is ordered to a fixed backset, either 2-3/8 inch or 2-3/4 inch, with the 2-3/8 inch latch as standard. If the existing bore has to be measured in the field or a crew is fitting a mix of doors, the Cal-Royal ED500 is a Grade 3 single cylinder deadbolt with adjustable backset for 1-3/8 to 1-3/4 inch doors, the Falcon D111 is a Grade 1 heavy duty classroom deadbolt with adjustable backset, and the Brinks Raleigh Series and Mendocino Series are single cylinder deadbolts with a 4 way adjustable backset.
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Does the Emtek 8378-US26 come with a warranty?
Absolutely. The Emtek 8378-US26 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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