Stanley Security QDC312 Series...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$384.00
$236.36
Stanley Security QDC312 Series - Grade 1 Door Closer, Tri-Pack Arm with Hold-Open

Stanley Security QDC312 Series - Grade 1 Door Closer, Tri-Pack Arm with Hold-Open

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Model: QDC312 NC 689
$384.00
$236.36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$384.00
$236.36
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QDC300 Series Standard Duty Door Closers

The QDC300 Series includes many premium design components standard, without costly upcharges. And with a wide range of available options and customizable features, the QDC300 provides flexible value without compromising quality.

  • Smaller, narrower footprint
  • Includes many premium design components without costly upcharges
  • Wide range of available options
  • Retrofit-compatible features
  • Non-handed and universal mount flexibility
  • Available in 4 unique arm options that feature variant arm and stop types

 

Product details

Security:

The QDC300 is ANSI/BHMA Grade 1 certified, and significantly exceeds performance requirements. These closers are fully adjustable, with a barrier-free option to meet ADA requirements.

Construction:

Strong materials and careful design ensures QDC300 closers perform reliably over the long term. We engineered the QDC300 Series to be fully adjustable and usable on both interior and exterior doors. All-weather fluid, a variety of feature options, and non-handed and universal mount flexibility make it easy to stock and use the QDC300 in a wide variety of applications.


Applications

The QDC300 is a cost-effective option ideal for aluminum storefront applications due to its smaller closer body.

There's no need to re-prep your door. The QDC300 has the same footprint as the Norton 1600 Series, so it's quick and easy to retrofit.

 

 

Product Downloads

Brochures & data sheets

Catalogs

Manufacturer Resources

Product Specs

Product Group:
Door Controls
Series:
QDC300 Series
Grade:
Grade 1
Duty Level:
Medium Duty
Warranty:
Lifetime Mechanical, 3 Year Finish
Closer Size:
1 to 6
Product Subgroup:
Door Closers - Surface Mounted
Product Type:
Surface Mounted Door Closers
Subcategory:
Surface Mounted Closers
Commercial/Residential:
Commercial
ANSI/BHMA:
ANSI/BHMA A156.4; ANSI A117.1; UL/cUL listed; UL10c; UL10b
Fasteners:
Wood and Machine Screws Standard, Sex Nuts and Self-Reaming, Self-Tapping Screws Standard
UL Listing Type:
ANSI/BHMA A156.4; ANSI A117.1; UL/cUL listed; UL10c; UL10b
Door Width:
30" to 48" (Interior); 32" to 48" (Exterior)
Mounting Location:
Pull Side/Push Side
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Category:
Door Controls
Department:
Door Hardware

Stanley Security QDC312 NC 689 – Frequently Asked Questions

1) Do I need to order a left hand or right hand QDC312 closer?
Neither. The QDC312 is non-handed, so the same closer works on a left hand or right hand door. It also mounts on either the pull side or the push side, meaning one part number covers regular arm, parallel arm and top jamb situations. For a property manager stocking spares across a building, that is one SKU instead of four.
2) Can the QDC312 replace a Norton 1600 Series closer without re-drilling the door?
Yes. The QDC300 body shares the same footprint as the Norton 1600 Series, so it drops into the existing prep with no new holes in the door or frame. That is the cleanest retrofit path on this closer. ZenSupply also carries the Norton Rixson 1600 Series itself if you would rather stay with the original.
3) Does the QDC312 door closer meet ADA opening force requirements?
Order it with the Barrier Free option. The QDC312 is offered in a standard configuration and a Barrier Free configuration, and the Barrier Free build is what meets the reduced opening force ADA calls for. The closer is certified to ANSI/BHMA A156.4 and ANSI A117.1, the accessibility standard. Barrier Free is available in all three finishes and both with and without a cover.
4) Is the Stanley QDC312 approved for a fire rated door?
The QDC312 is UL and cUL listed, with UL10c and UL10b listings covering positive pressure and neutral pressure fire door assemblies. One thing to watch: the QDC312 arm is a hold-open arm, and a mechanical hold-open is not permitted on a fire door unless the door is held by a listed release device. On a fire opening, specify a non-hold-open arm instead.
5) Will a QDC312 closer work on an aluminum storefront door?
That is the application it was built around. The QDC300 body is smaller and narrower than a typical commercial closer, which is what lets it sit on the limited top rail of an aluminum storefront door. Both the 689 aluminum and 690 dark bronze finishes are the usual storefront matches. If your storefront door is on a heavy-traffic exterior entrance, the Norton Rixson 1600BC Series is a heavy duty storefront closer to weigh against this medium duty unit.
6) What is the closest equivalent to the Stanley Security QDC312 door closer from another brand?
The QDC312 is a Grade 1, medium duty surface mounted closer with a tri-pack arm, adjustable spring sizes 1 to 6, and non-handed universal mounting on either the pull side or push side. The Norton Rixson 8501A is the nearest match in another line: it is a Grade 1, medium duty tri-mount surface closer with an adjustable size 1-6 spring. The Sargent 1131 is also Grade 1 and medium duty, and the BEST HD7000 Series is Grade 1 medium duty with adjustable spring power and backcheck control. All three cover the same duty class and grade as the QDC312.
7) The QDC312 has the same footprint as the Norton 1600 - which Norton closer is that for a retrofit?
The QDC300 Series shares the Norton 1600 Series footprint, so the existing door prep carries over. In the Norton Rixson 1600 line, the 1601P is a Grade 1 medium duty tri-mount surface closer with 180 degree swing, and the 1600 Series aluminum storefront closer is a Grade 1 heavy duty version with tri-style mounting. The QDC312 is Grade 1 medium duty, which puts it in the same duty class as the 1601P.
8) Which door closer should I use instead of the QDC312 on a high traffic exterior entrance?
The QDC312 is a medium duty Grade 1 closer rated for door widths 30 to 48 inches interior and 32 to 48 inches exterior. For an opening that calls for a heavier closer, the BEST EHD9000 Series is extra heavy duty Grade 1 with adjustable spring sizes 1-6, the Sargent 1431 Powerglide is heavy duty Grade 1 with adjustable spring power, and the Falcon SC71A is a heavy duty Grade 1 surface mount closer. The Design Hardware 416 Series is another heavy duty option with a tri-packed non-hold-open arm.
9) Which other closers come with a hold-open arm like the QDC312?
The QDC312 carries a tri-pack arm with hold-open. Among other lines, the Accentra 51 Series is supplied with a tri-packed hold open arm in sizes 1-6, and the Orca Hardware BHDC1958 hold open version uses a tri-packed hold open arm with a parallel bracket. Watch the arm function when cross-shopping: the Accentra 1101BF, the Accentra 2701, the Design Hardware 116, 316 and 416 Series, and the Orca BHDC1958 regular arm version are all tri-packed but non-hold-open, so they will not hold the door open.
10) I need a barrier free ADA door closer - what are the alternatives to the Stanley QDC312 barrier free version?
The QDC312 offers a barrier free option and is built to ANSI A117.1 alongside ANSI/BHMA A156.4. Other barrier free choices include the Cal-Royal 500S, a Grade 1 barrier free closer with adjustable back-check, and the Cal-Royal N900PBF in the 900 Series, a Grade 1 barrier free hydraulic surface closer. The Calibre CA9901 is a Grade 1 ADA surface mount closer with a tri-pack arm in sizes 2-5, and the Calibre CA4001 is a Grade 1 hydraulic closer with adjustable ADA spring tension. The Imperial USA TC4300 is a heavy duty size 1-6 ADA closer.
11) What should I use instead of the QDC312 when the opening needs a slide track or concealed-style arm?
The QDC312 uses a tri-pack arm with hold-open and mounts pull side or push side. When the opening calls for a track arm instead of a projecting arm, the Corbin Russwin DC5230 is a Grade 1 surface closer with a slide track arm standard, pull side mounting, for 1-3/4 inch doors. The Dorma 8916-JT is a Grade 1 heavy duty jamb track closer with frame face mounting on the pull side and an adjustable size 1-6 spring. Both are a different arm geometry than the QDC312 tri-pack, so the door prep and header conditions need to be checked before swapping.
12) What closers besides the Stanley QDC312 suit an aluminum storefront door?
The QDC300 is aimed at aluminum storefront work because of its smaller, narrower closer body, and it is Grade 1 medium duty for 1-3/4 inch doors. The Norton Rixson 1600 Series is described as an aluminum storefront closer with tri-style mounting, Grade 1 heavy duty. The Falcon SC61A is a light to medium duty Grade 1 cast aluminum surface closer, and the Sargent 1331 is a Grade 1 medium duty closer with a universal aluminum body.
13) What does the hold-open arm on the QDC312 actually do, and when should I not use one?
The tri-pack arm on the QDC312 holds the door open at a set point and releases when the door is pushed past it, which is what you want on a stockroom, a loading door, or a corridor door being used for deliveries. Skip it on any door that has to self-close on demand: fire doors, smoke barriers, and secured exterior entries. For those, a non-hold-open tri-pack closer is the right call. ZenSupply carries the Accentra 1101BF and the Design Hardware 316 Series, both tri-packed non-hold-open arm closers.
14) Do I need to buy mounting screws separately for the QDC312 closer?
No, fasteners ship with the closer. Wood and machine screws are standard, and sex nuts along with self-reaming, self-tapping screws are standard as well. Sex nuts are what you want through a hollow metal or wood door leaf where a screw alone will not hold under closer torque, and the self-reaming screws handle aluminum frame attachment. You may still need a drop plate or bracket depending on your frame and stop condition.
15) Should I order the QDC312 with a full cover or without a cover?
Full-size cover gives a finished look on a lobby, office or public corridor door where the closer is visible. No cover is the choice for back-of-house, mechanical rooms, and service doors, and it makes the adjustment valves easier to reach when a maintenance tech is tuning sweep and latch speed. Both options come in 689 aluminum, 690 dark bronze and 696 satin brass, and both are offered with or without Barrier Free.
16) Is a medium duty closer like the QDC312 enough for a busy building entrance?
The QDC312 is rated medium duty and certified ANSI/BHMA Grade 1, which is the top grade under A156.4, so it is a commercial-rated closer, not a light commercial one. For a school main entrance, a hospital corridor, or any door that swings hundreds of times a day and gets abused, step up to a heavy duty body. ZenSupply carries the BEST HD8000 Series and the Sargent 1431 Powerglide, both Grade 1 heavy duty surface closers.
17) Can I use one QDC312 closer on both interior and exterior doors in the same building?
Yes, and that is the point of stocking it. The QDC312 uses all-weather fluid so it holds its closing speed through temperature swings on an exterior door, and the adjustable size 1 to 6 spring lets the same closer be dialed down for a 30 inch interior door or up for a 48 inch exterior one. Being non-handed and mountable pull side or push side, a single stocked unit covers most openings in a portfolio.
18) What is a comparable Grade 1 tri-pack closer to the Stanley QDC312 if I need a non-hold-open version?
Closest matches ZenSupply carries: the Accentra 1101BF, a tri-packed non-hold-open arm closer with adjustable spring sizes 1 to 4, and the Accentra 2701 Series, also tri-packed non-hold-open with sizes 1 to 6, which is the equivalent adjustment range to the QDC312. If you want to keep the hold-open function but a different brand, the Accentra 51 Series is a tri-packed hold-open arm closer with the same size 1 to 6 range.
19) Which closers can replace the QDC312 on a 1-3/4 inch commercial door?
The QDC312 is built for 1-3/4 inch doors, commercial use, non-handed. Peers that carry the same 1-3/4 inch door thickness are the Corbin Russwin DC3200, DC5230, DC6200 and DC8200 Series, all Grade 1, and the Orca Hardware BHDC1958 and BHDC2011 Series. Among the Orca units, the BHDC1958 hold open version matches the QDC312 hold-open arm function, while the BHDC1958 regular arm, the BHDC1958 delayed action and the BHDC2011 delayed action are tri-packed non-hold-open.
20) What is a lighter duty alternative to the Stanley QDC312 for a low traffic interior door?
The QDC312 is medium duty Grade 1. For interior doors that see less traffic, the BEST SL6000 Series is a light duty Grade 1 surface closer with adjustable spring sizes, the Norton Rixson 160 Series is a light duty Grade 1 light commercial closer with an adjustable spring, and the LCN 1250 Series is a light duty closer in sizes 1-5 with all-weather fluid and ADA compliance. The Arrow DC314 in the DC300 Series is also a light duty Grade 1 surface closer.
21) Is the Arrow DCN325 the same closer as the Stanley QDC312?
They are not the same. The Arrow DCN325 is a Grade 1 surface closer supplied less cover with a regular/parallel arm tri-pack and adjustable spring size 1 to 6, and it is rated light duty. The QDC312 is rated medium duty over spring sizes 1 to 6 and carries a tri-pack arm with hold-open. Both offer the size 1-6 range, but the duty rating and the hold-open function differ. The Arrow DCN314 is the same light duty Arrow closer with a narrower size 1 to 4 spring range.
22) My spec calls for a Grade 1 closer - which closers meet that besides the Stanley QDC312?
The QDC312 is ANSI/BHMA Grade 1 and UL/cUL listed to UL10c and UL10b. Grade 1 peers across other lines include the Corbin Russwin DC3200, DC5230, DC6200 and DC8200 Series, the Sargent 1131, 1331, 1431 and 281, the Falcon SC61A, SC71A and SC81A, the BEST HD7000, HD8000, EHD9000 and SL6000 Series, and the Dexter DCH1000, DCH4000, DCL2000 and DCM1000 Series. If Grade 1 is a hard requirement, note that the Cal-Royal 400 Series is Grade 2 and the Falcon SC91A is Grade 3.
23) The QDC312 mounts three ways - which other closers offer the same tri-mount flexibility?
The QDC312 is non-handed and mounts on the pull side or push side. The Dexter DCH1000, DCH4000, DCL2000 and DCM1000 Series are all Grade 1 tri mount closers, mounting regular, parallel or top jamb, with the DCH1000 supplied with a full cover. The Norton Rixson 8501A is a Grade 1 tri-mount closer with a size 1-6 spring, and the Norton Rixson 1601P is a Grade 1 tri-mount design with 180 degree swing. The Arrow DCN325 uses a regular/parallel arm tri-pack in sizes 1 to 6.
24) How does the Dormakaba 7303 compare to the Stanley QDC312 for standardizing a building?
Both are Grade 1 medium duty surface closers. The DORMA 7303 Series is a standard duty surface-mounted closer offered in a painted finish, and the Dormakaba 7414 is a Grade 1 medium duty closer in size 1-4. The QDC312 covers spring sizes 1 to 6, is non-handed with pull side or push side mounting, and comes in 689 aluminum, 690 dark bronze, and 696 satin brass. For a facility standardizing on one closer across mixed openings, the size 1-6 range and finish choices are the points to weigh against the 7414 size 1-4 range.
25) What finishes does the Stanley QDC312 door closer come in to match existing hardware?
Three: 689 aluminum, 690 dark bronze, and 696 satin brass. 689 is the default match for aluminum storefront and most commercial openings, 690 pairs with bronze storefront and exterior entrances, and 696 suits brass-trimmed interior doors. All three are available with the full-size cover and without a cover.
26) Is the Stanley QDC312 suitable for a residential door?
It is a commercial-rated closer, sized for 30 to 48 inch doors at 1-3/4 inch thickness. That covers apartment corridor and unit entry doors in multi-family buildings, which are typically 1-3/4 inch, but it is not the right part for a light interior residential door of 1-3/8 inch thickness. For that thickness you need a residential-scale closer instead.
27) Is the Arrow DCN500DP drop plate a substitute for a QDC312 closer?
No. The Arrow DCN500DP is a parallel drop plate for the DCN500 - a mounting bracket, not a closer. The QDC312 is a complete surface mounted closer with a tri-pack arm and hold-open, supplied with wood and machine screws standard plus sex nuts and self-reaming, self-tapping screws. If a closer is what the opening needs, the comparable units are closers such as the Norton Rixson 8501A or the Sargent 1131, both Grade 1 medium duty.
How fast can I get the Stanley Security QDC312 NC 689 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Stanley Security QDC312 NC 689 come with a warranty?
Absolutely. The Stanley Security QDC312 NC 689 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Stanley Security QDC312 NC 689?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Stanley Security QDC312 NC 689 from ZenSupply?
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