Norton Rixson QT27 Series Heav...
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$3,474.01
Norton Rixson Norton Rixson QT27 Series - Quick Install Removable 3/4" Offset Heavy Duty Floor Closer with Threshold, 350 lbs. Door Weight RIX-QT27

Norton Rixson QT27 Series Heavy Duty Floor Closer with 3/4" Offset and 350 lb Door Weight Capacity

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Model: QT2785N-RH-626
$3,474.01
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$3,474.01
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Norton Rixson QT27 Series Heavy Duty Floor Closer with 3/4" Offset and 350 lb Door Weight Capacity

Professional Floor Closer Solution for Heavy Commercial Doors

The Norton Rixson QT27 Series is a heavy-duty 3/4" offset-hung floor closer engineered for 1-3/4" door frame installation on interior or exterior doors weighing up to 350 lbs. This Grade 1 certified floor closer features a Cycolac rust-proof cement case with built-in positive dead stop and separate independent valves for closing speed, latch speed, and backcheck control. The unit includes a 180° top pivot and one M19 intermediate pivot for doors ranging from 60" to 90" in height.

Professional Features & Benefits

  • Heavy-Duty Weight Capacity: Supports doors up to 350 lbs with robust internal components designed for long-term reliability in demanding commercial applications.
  • 3/4" Offset Design: Offset-hung configuration accommodates 1-3/4" door frames with surface-attached bottom arm allowing closer removal without demounting door.
  • Built-In Dead Stop Protection: Hardened one-piece steel spindle with positive dead stop prevents doors from swinging beyond desired opening degree at 85°, 90°, or 95° specifications.
  • Precision Speed Control: Separate independent valves provide individual adjustment for closing speed, latch speed, and backcheck for enhanced operational control.
  • Weather-Resistant Construction: Cycolac rust-proof cement case with increased depth design suitable for interior or exterior door applications.
  • Complete Pivot System: Includes 180° top pivot and M19 intermediate pivot with mortise arm and thru-bolt attachment for secure installation.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.4 Grade 1 standards for commercial-grade performance and durability.
  • 10-Year Limited Warranty: Comprehensive manufacturer warranty provides long-term protection and confidence in product reliability.

Technical Specifications

  • ANSI/BHMA: ANSI/BHMA A156.4, Grade 1
  • Commercial/Residential: Commercial
  • Cover Type: Cycolac, rust-proof cement case
  • Delay Function: Yes
  • Department: Door Hardware
  • Door Swing: Single Acting
  • Door Weight: 250 lbs.
  • Duty Level: Heavy Duty
  • Grade: Grade 1
  • Hang Type: Offset Hung
  • Hold Open Feature: No
  • Mounting Method: Offset
  • Product Category: Door Controls
  • Product Group: Door Controls
  • Product Model: QT27N
  • Product Subgroup: Door Closers - Floor
  • Product Type: Floor Door Closers
  • Series: QT27 Series
  • Subcategory: Floor Closers
  • Warranty: 10 Year Limited

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, frame dimensions, and weight capacity for this 350 lb rated closer.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and floor surfaces for the 3/4" offset configuration.
  3. Prepare door and frame by drilling required holes and routing as specified for the mortise arm with thru-bolt attachment system.
  4. Install the floor closer unit, 180° top pivot, and M19 intermediate pivot per manufacturer torque specifications and alignment requirements.
  5. Adjust the separate independent valves for closing speed, latch speed, and backcheck to achieve desired door operation and set dead stop at specified degree (85°, 90°, or 95°).
  6. Test door operation throughout full range of motion to verify proper function, weight support, and dead stop engagement. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Norton Rixson Quality?

Norton Rixson QT27 Series floor closers deliver professional-grade reliability with heavy-duty construction rated for doors up to 350 lbs and ANSI/BHMA Grade 1 certification. The 10-year limited warranty and robust Cycolac rust-proof cement case ensure dependable performance in demanding commercial applications. Engineered with hardened one-piece steel spindle and separate valve controls for precision operation where consistent door control is essential.

Product Specs

Series:
QT27 Series
Duty Level:
Heavy Duty
Grade:
Grade 1
Door Swing:
Single Acting
Warranty:
10 Year Limited
ANSI/BHMA:
ANSI/BHMA A156.4, Grade 1
Product Group:
Door Controls
Product Subgroup:
Door Closers - Floor
Product Type:
Floor Door Closers
Subcategory:
Floor Closers
Door Weight:
250 lbs.
Commercial/Residential:
Commercial
Hang Type:
Offset Hung
Product Model:
QT27N
Delay Function:
Yes
Hold Open Feature:
No
Mounting Method:
Offset
Product Category:
Door Controls
Department:
Door Hardware
Cover Type:
Cycolac, rust-proof cement case

Norton Rixson QT2785N-RH-626 – Frequently Asked Questions

1) What is the difference between an offset hung floor closer like the Norton Rixson QT27 and a center hung one?
The QT27 is offset hung, not center hung. That means the pivot point sits in from the edge of the door rather than on the door's centerline, so the door swings on a 3/4 inch offset and the bottom arm attaches at the surface of the door. Offset hung is what you use when the opening is prepped for offset pivots and you want the door to clear the frame on one side; center hung doors pivot about their midline and swing both ways. The QT27 is also single acting, so it is for a door that swings one direction only. If your opening needs a double acting door, this is the wrong closer.
2) Do I have to specify handing when ordering a Norton Rixson QT27 floor closer?
Yes. The QT27 is built left hand or right hand, and since it is a single acting closer the hand has to match the door. Stand outside the opening, on the side the door swings away from: hinges (pivots) on your left is left hand, on your right is right hand. Order the wrong hand and the closer will not work in that opening.
3) Can the QT27 floor closer stop the door from swinging into a wall?
It has a built-in positive dead stop on a hardened one-piece steel spindle, and you specify the stop angle when you order: 85, 90 or 95 degrees. That means no separate overhead stop or floor stop is needed to keep the door off adjacent glass or wall. Pick the degree from the actual clearance at the opening, because the dead stop is set by the unit you order, not adjusted freely on site.
4) Do I need to buy pivots separately with the QT27, and what door heights do they cover?
No. The QT27 ships with a 180 degree top pivot and one M19 intermediate pivot, sized for doors from 60 to 90 inches tall, with a mortise arm and thru-bolt attachment at the door. On taller or unusually heavy leaves you may want an additional intermediate pivot, but for a standard opening in that height range the pivot set in the box completes the hang.
5) What is the closest alternative to the Norton Rixson QT27 floor closer if I need a concealed floor closer body only?
The Dormakaba Dorma BTS80 is a heavy duty concealed floor closer supplied as a body only. That is the main difference in scope: the Norton Rixson QT27 is an offset hung floor closer package that includes the 180 degree top pivot and an M19 intermediate pivot, so the door hanging hardware comes with it. The BTS80 body only expects you to specify the pivots, spindle and cover separately. Both are rated heavy duty, so for a heavy commercial door the decision comes down to whether you want a complete offset hung set or are matching an existing concealed installation.
6) Is the Dorma BTS75V a Grade 1 equivalent to the Norton Rixson QT27?
Both carry Grade 1. The Norton Rixson QT27 is certified to ANSI/BHMA A156.4 Grade 1 and the Dormakaba BTS75V is also listed as Grade 1. The practical difference is configuration: the BTS75V ships as a closer body with cement case, less spindle, and is a non hold open function only. The QT27 is offered in both non hold open and selective hold open arm functions, in left or right hand, and with a choice of 85, 90 or 95 degree dead stop. If the opening needs a hold open at a set degree, the QT27 covers it; if you are replacing a body in an existing BTS cement case, the BTS75V is the match.
7) Can I drop a Dorma BTS75V or BTS80 into an opening prepped for a Norton Rixson QT27?
Treat them as different preps, not swaps. The Norton Rixson QT27 is a 3/4 inch offset hung closer with its own Cycolac rust-proof cement case and a surface attached bottom arm, and it is supplied with the 180 degree top pivot and M19 intermediate pivot. The Dormakaba BTS75V is a body with its own cement case supplied less spindle, and the BTS80 is a concealed closer body only. Cement case footprint, spindle height and pivot geometry differ between makers, so if the floor is already poured around one brand's case, stay with that brand's body unless you are prepared to break out and reset the case.
8) Is there an ADA option for the QT27 floor closer on an interior door?
There is a lighter spring option you select as yes or no when ordering. On an interior opening where you need reduced opening force for accessibility, order the lighter spring version. On a heavy exterior door that has to close and latch against wind, stay with the standard spring. You also get separate independent valves for closing speed, latch speed and backcheck, so the sweep and latch can be tuned on site after the door hangs.
9) What is the sealed closer option on the Norton Rixson QT27 for?
The sealed option (ordered as yes or no) is the one to take where water can reach the closer body: exterior entrances, vestibules, wash-down areas, or any floor that gets mopped hard. The case itself is a Cycolac rust-proof cement case with increased depth, which is why the unit is rated for interior or exterior doors, but a sealed unit adds protection at the closer body. On a dry interior office door the standard, non-sealed unit is fine.
10) Will the QT27 stand up to a heavy entrance door in a school or hospital?
It is a heavy duty, commercial-rated unit certified to ANSI/BHMA A156.4 Grade 1, which is the top performance grade for door closers and what most institutional specs call for. The dead stop is integral to a hardened one-piece steel spindle rather than a bolt-on accessory, and the three independent valves let maintenance retune the door as traffic and stack pressure change. For a facility standardizing across many openings, Grade 1 and the fixed 85/90/95 stop angles make it repeatable from door to door.
11) Can the QT27 floor closer be serviced without taking the door down?
Yes, and that is the main reason to spec it. The bottom arm is surface attached, so the closer body can be pulled out of the cement case for service or replacement with the door left hanging. On a conventional closer buried under the door you are demounting the leaf to get at it, which on a heavy storefront or institutional door is a two-person job.
12) What else can I look at instead of the Norton Rixson QT27 floor closer?
Two Dormakaba alternatives are worth knowing. The Dorma BTS75V is a Grade 1 floor closer body with cement case, supplied less spindle and non-hold-open only, so it suits an opening where the door has to close every time and you are sourcing the spindle separately. The Dorma BTS80 is a heavy duty concealed floor closer sold as a body only, no cement case. The QT27 differs from both in that it is an offset hung unit supplied with the top pivot and intermediate pivot, so it is the more complete package when you are prepping a new offset opening.
13) I need a floor closer on a fire rated opening - will the QT27 or the Dorma BTS80 work?
The Dormakaba BTS80 is listed as not fire rated, so it should not be specified where a fire rating is required. Take the fire rating question for the Norton Rixson QT27 to the manufacturer catalog and installation documents before you commit the opening, since the QT27 is sold as a commercial Grade 1 unit certified to ANSI/BHMA A156.4 for door control performance rather than as a labeled fire assembly component. For any labeled opening, confirm the closer against the door and frame label listing first.
14) What finishes does the Norton Rixson QT27 come in for matching existing door hardware?
Thirteen: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil rubbed bronze, 613E dark oxidized satin bronze, 618 bright nickel, 619 satin nickel, 622 black painted, 625 bright chrome, 626 satin chrome, plus black suede powder and white suede powder. The finish applies to the exposed cover and pivot hardware, so match it to the pivots and pulls already on the opening rather than to the door itself.
15) Does the QT27 floor closer have a delayed action feature?
Yes, delayed action is part of the QT27's control set, which matters on openings where people need extra time to get through: hospital corridors, doors used with carts, or any accessible entrance. It works alongside the separate valves for closing speed, latch speed and backcheck, all adjustable at the unit after installation.
How fast can I get the Norton Rixson QT2785N-RH-626 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 Norton Rixson QT2785N-RH-626 come with a warranty?
Absolutely. The Norton Rixson QT2785N-RH-626 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 Norton Rixson QT2785N-RH-626?
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
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