Norton Rixson L27 Series 3/4" ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,988.79
Norton Rixson Norton Rixson L27 Series - 3/4" Offset Extra Heavy Duty for Lead-lined Doors RIX-L27

Norton Rixson L27 Series 3/4" Offset Extra Heavy Duty Floor Closer for Lead-Lined Doors up to 1500 lbs

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Model: L2790N-RH-626
$3,988.79
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,988.79
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Norton Rixson L27 Series 3/4" Offset Extra Heavy Duty Floor Closer for Lead-Lined Doors up to 1500 lbs

Professional Floor Closer Solution for Heavy-Duty Lead-Lined Door Applications

The Norton Rixson L27 Series floor closer delivers exceptional performance for lead-lined interior or exterior doors weighing up to 1500 lbs. This 3/4" offset-hung floor closer features heavy-duty construction with cast iron cement case and is designed for high traffic applications requiring precise door control. ANSI/BHMA A156.4 Grade 1 certified with built-in positive dead stop available at 85°, 90°, 95° or 105° opening degrees.

Professional Features & Benefits

  • Heavy-Duty Weight Capacity: Supports doors up to 1500 lbs with specialized design for lead-lined door applications requiring extra structural support.
  • 3/4" Offset Design: Offset-hung configuration accommodates 1-3/4" thick doors with screw holes strategically spaced to straddle lead lining for secure mounting.
  • Built-in Positive Dead Stop: Prevents doors from swinging beyond desired opening degree with options for 85°, 90°, 95° or 105° stops for precise control.
  • Cast Iron Construction: Heavy-duty cast iron cement case with robust internal components and hardened one-piece steel spindle for long-term reliability in demanding applications.
  • Multiple Valve Control: Separate independent valves for closing speed, latch speed, and backcheck provide precision adjustment and enhanced operational control.
  • ANSI/BHMA Grade 1 Certification: Meets ANSI/BHMA A156.4 Grade 1 standards for commercial-grade performance and reliability.
  • Compatible Components: Includes L180 top pivot with ML19 intermediate pivots required for doors 60" to 90" in height (order separately).
  • 10-Year Limited Warranty: Comprehensive warranty coverage provides long-term protection and confidence in product performance.

Technical Specifications

  • ANSI/BHMA: ANSI/BHMA A156.4, Grade 1
  • Commercial/Residential: Commercial
  • Cover Type: Cast iron cement case
  • Delay Function: Yes
  • Department: Door Hardware
  • Door Swing: Single Acting
  • Door Weight: 1500 lbs.
  • Duty Level: Heavy Duty
  • Features: Lead Lined
  • Grade: Grade 1
  • Hang Type: Offset Hung
  • Hold Open Feature: No
  • Mounting Method: Offset
  • Product Category: Door Controls
  • Product Group: Door Controls
  • Product Model: L27N
  • Product Subgroup: Door Closers - Floor
  • Product Type: Floor Door Closers
  • Series: L27 Series
  • Subcategory: Floor Closers
  • Warranty: 10 Year Limited

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, weight capacity, and lead lining considerations specific to this heavy-duty application.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and floor surfaces, ensuring proper alignment with lead lining structure.
  3. Prepare door and floor by drilling required holes and routing as specified in manufacturer instructions, taking care to maintain structural integrity of lead-lined door construction.
  4. Install L180 top pivot and any required ML19 intermediate pivots per manufacturer specifications for door height and weight requirements.
  5. Mount floor closer unit and secure all mounting hardware per manufacturer torque specifications, ensuring proper load distribution for 1500 lb capacity.
  6. Adjust closing speed, latch speed, and backcheck valves for optimal operation, and set positive dead stop to desired opening degree (85°, 90°, 95° or 105°).
  7. Test device operation under full door weight to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Healthcare Facilities with Lead-Lined Radiation Protection Doors
  • Medical Imaging Centers and X-Ray Rooms
  • Industrial Facilities with Heavy Security Doors
  • Government and Defense Buildings
  • Research Laboratories and Clean Rooms
  • High-Security Commercial Buildings
  • Specialized Manufacturing Facilities

Why Choose Norton Rixson Quality?

Norton Rixson L27 Series floor closers deliver professional-grade reliability with heavy-duty cast iron construction and hardened steel components rated for doors up to 1500 lbs. The 10-year limited warranty and ANSI/BHMA Grade 1 certification demonstrate the manufacturer's commitment to quality and performance. Engineered specifically for demanding lead-lined door applications where dependable operation and structural integrity are essential.

Product Specs

Series:
L27 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:
1500 lbs.
Commercial/Residential:
Commercial
Features:
Lead Lined
Hang Type:
Offset Hung
Product Model:
L27N
Cover Type:
Cast iron cement case
Delay Function:
Yes
Hold Open Feature:
No
Mounting Method:
Offset
Product Category:
Door Controls
Department:
Door Hardware

Norton Rixson L2790N-RH-626 – Frequently Asked Questions

1) Will the Norton Rixson L27 floor closer handle a lead-lined x-ray room door?
That is exactly what the L27N is built for. It is an offset hung floor closer rated for lead-lined doors up to 1500 lbs, with the mounting screw holes spaced to straddle the lead lining so fasteners do not compromise the shielding. It suits 1-3/4 inch thick doors and sits in a cast iron cement case. Typical use is medical imaging suites, x-ray rooms and other shielded openings where the leaf is far heavier than a standard commercial door.
2) Do I need a separate floor stop or overhead stop with this closer?
No. The L27N has a positive dead stop built into the closer, factory set at 85, 90, 95 or 105 degrees depending on which you order. That stops the door at the chosen degree without an overhead or wall stop, which matters on a shielded door where you do not want the leaf swinging into equipment or masonry.
3) What is the closest equivalent to the Norton Rixson L27N floor closer if I need a heavy duty concealed floor closer from a different manufacturer?
The Dormakaba Dorma BTS80 is a concealed floor closer body rated Heavy Duty, which puts it in the same broad service class as the Norton Rixson L27N. The differences matter on a lead-lined opening: the L27N is an offset hung, single acting closer specifically built for lead lined doors, rated to 1500 lbs, with an ANSI/BHMA A156.4 Grade 1 certification and a cast iron cement case. The BTS80 is supplied as a body only and is listed with no fire rating. If the opening is a standard commercial door and the lead lining and 1500 lb capacity are not part of the requirement, the BTS80 is worth pricing; if the door is lead lined, the L27N screw hole spacing that straddles the lead lining is the reason to stay with it.
4) Can I substitute a Dorma BTS75V for a Norton Rixson L27N on an x-ray room lead-lined door?
Treat them as different parts. Both are Grade 1 floor closers with a cement case, but the L27N is the one built for lead lined doors - its mounting screw holes are spaced to straddle the lead lining, and it is rated for door weight up to 1500 lbs on a 3/4 inch offset hung, single acting opening. The BTS75V is described as a floor closer body with cement case, less spindle, in a non hold open function, without a lead lined designation. On a shielded imaging door, specify the L27N and order the L180 top pivot, plus ML19 intermediate pivots for doors 60 to 90 inches tall.
5) Does the L27 floor closer hold the door open?
It depends which arm function you order. The standard build is non-hold open, and the product's hold open feature is listed as none. There is a selective hold open version available on the same series if you need the leaf to stand open. Note that the hold open is a function of the unit you order, not something you switch on later in the field.
6) Can I get the closing force down to meet ADA opening force on a heavy door?
There is a lighter spring option on the L27N ordered specifically for reduced opening force, and the unit has separate independent valves for closing speed, latch speed and backcheck so sweep and latch can be tuned on site. A delay function is also part of the closer. Bear in mind a lead-lined leaf is heavy by nature, so the lighter spring trades closing power for opening ease and should be matched to the actual leaf weight.
7) Is this floor closer rated for high-traffic commercial use, and what grade is it?
It is certified to ANSI/BHMA A156.4 Grade 1, the top commercial grade for door closers, and is classed heavy duty for commercial application. Construction is a cast iron cement case with a hardened one-piece steel spindle, which is what carries the load on a 1500 lb leaf in a hospital corridor or imaging suite.
8) I only need a non hold open floor closer for a standard interior door - is there a simpler option than the Norton Rixson L27N?
Yes. The Dormakaba Dorma BTS75V is a Grade 1 floor closer body with cement case supplied non hold open, less spindle, and it covers a plain single function opening without the extra-heavy-duty build. The L27N is the heavier specification: cast iron cement case, 1500 lb door capacity, and it is ordered with a choice of non hold open or selective hold open arm function, four dead stop degrees at 85, 90, 95 and 105, and an optional lighter ADA spring. If none of those choices apply to the job, the BTS75V is the leaner part number.
9) Which floor closer should I pick if I need a hold open function?
The Norton Rixson L27N is ordered with either a non hold open or a selective hold open arm function, so the hold open version is available within the same series. The Dormakaba Dorma BTS75V is listed as NHO, non hold open only. If a hold open is part of the door schedule, that steers the selection toward the L27N selective hold open configuration.
10) What do I need to order separately with a Dorma BTS75V that comes included differently on a Norton Rixson L27N?
The Dorma BTS75V is supplied as a body only with cement case, less spindle, so the spindle is a separate line. The Norton Rixson L27N uses a hardened one-piece steel spindle and is configured at order time for an extended spindle in 1/2, 1, 1-1/2 or 2 inch, or none, along with a sealed closer option. Either way, on the L27N the L180 top pivot and ML19 intermediate pivots for 60 to 90 inch doors are ordered separately.
11) How do I match the floor closer cover to the other hardware in the building?
The L27N is offered in thirteen finishes: 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 BSP black suede powder and WSP white suede powder. For a healthcare facility standardizing on 626, that is available across the series.
12) Why would I order the sealed version of the L27 floor closer?
The sealed closer is an ordering option on the L27N alongside the standard build. Pick it where the cement case sits in a floor that may see washdown or moisture ingress, such as a lab or a decontamination area. It is specified at time of order, so decide before the case is poured into the slab.
How fast can I get the Norton Rixson L2790N-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 L2790N-RH-626 come with a warranty?
Absolutely. The Norton Rixson L2790N-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 L2790N-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
Why buy the Norton Rixson L2790N-RH-626 from ZenSupply?
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