Norton Rixson 28 Series Heavy ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,068.85
$1,228.96
Norton Rixson 28 Series Heavy Duty Floor Closer - Left Hand Active Pair Configuration

Norton Rixson 28 Series Heavy Duty Floor Closer - Left Hand Active Pair Configuration

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Model: 28N-LAP-RH-105
$2,068.85
$1,228.96

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,068.85
$1,228.96
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Norton Rixson 28 Series Heavy Duty Floor Closer - Left Hand Active Pair Configuration

Premium Concealed Floor Closer for High-Traffic Commercial Applications

The Norton Rixson 28N-LAP delivers exceptional door control performance with concealed in-floor installation for demanding commercial and institutional environments. This heavy-duty floor closer supports doors up to 300 lb (136 kg) and 4'0" (1219 mm) width, specifically configured for Left Hand Active Pair (LAP) single-acting doors. Built with cast iron closer body and stainless steel components, it meets ANSI/BHMA A156.4 Grade 1 certification for superior durability and reliability.

Professional Features & Benefits

  • Heavy-Duty Load Capacity: Supports doors up to 300 lb (136 kg) and 4'0" (1219 mm) width for versatile commercial door applications.
  • Concealed In-Floor Design: Maintains clean architectural sightlines by eliminating visible overhead hardware while providing superior door control.
  • Precision Left Hand Active Pair Configuration: Specifically engineered for LAP single-acting doors ensuring accurate alignment and smooth swing operation.
  • Adjustable Performance Controls: Features adjustable closing speed, latch speed, and backcheck settings for customized door operation in different environments.
  • Commercial-Grade Construction: Cast iron closer body with stainless steel components provides exceptional durability for high-traffic applications.
  • ANSI/BHMA Grade 1 Certification: Meets stringent commercial door hardware standards for reliability and performance in demanding environments.
  • Versatile Door Compatibility: Designed for use with wood, metal, or glass doors in commercial, institutional, and architectural spaces.
  • Weather-Resistant Design: High-quality materials and finishes offer excellent resistance to environmental factors for interior and exterior applications.

Technical Specifications

  • ANSI/BHMA: ANSI/BHMA A156.4, Grade 1
  • Commercial/Residential: Commercial
  • Cover Type: Cast iron cement case
  • Department: Door Hardware
  • Door Swing: Single Acting
  • Duty Level: Heavy Duty
  • Hold Open Feature: No
  • Product Group: Door Controls
  • Product Subgroup: Door Closers - Floor
  • Product Type: Floor Door Closers
  • Subcategory: Specialty Closers

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, weight capacity up to 300 lb, and Left Hand Active Pair handing configuration.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on floor and door surfaces for concealed installation.
  3. Prepare floor cavity and door by cutting required openings and routing as specified in manufacturer instructions for in-floor mounting.
  4. Install all mounting hardware and secure the closer body in floor cavity per manufacturer specifications, ensuring proper alignment with door pivot points.
  5. Adjust closing speed, latch speed, and backcheck controls for proper door operation and alignment throughout the full range of motion.
  6. Test device operation to verify smooth closing action, proper latching, and alignment. Refer to manufacturer documentation for complete installation details and adjustment procedures.

Professional Applications

  • Commercial Office Buildings
  • Healthcare Institutions
  • Educational Facilities
  • Retail Establishments
  • Government and Municipal Buildings
  • Architectural Projects Requiring Clean Sightlines
  • High-Traffic Interior and Exterior Openings

Why Choose Norton Rixson Quality?

Norton Rixson 28 Series floor closers deliver professional-grade reliability with cast iron construction and stainless steel components rated for heavy-duty commercial applications up to 300 lb door capacity. ANSI/BHMA A156.4 Grade 1 certification ensures consistent performance in demanding high-traffic environments. Engineered for demanding commercial applications where dependable door control and clean architectural appearance are essential.

Manufacturer Resources

Product Specs

Subcategory:
Floor Closers
Door Swing:
Single Acting
ANSI/BHMA:
ANSI/BHMA A156.4, Grade 1
Product Group:
Door Controls
Product Subgroup:
Door Closers - Floor
Product Type:
Floor Door Closers
Duty Level:
Heavy Duty
Commercial/Residential:
Commercial
Cover Type:
Cast iron cement case
Hold Open Feature:
No
Department:
Door Hardware
Product Category:
Door Controls

Norton Rixson 28N-LAP-RH-105 – Frequently Asked Questions

1) Is the Norton Rixson 28 Series floor closer single acting or double acting?
Single acting. The 28 Series swings one way only, so it suits a door that stops against a stop or rabbeted frame. If your opening is a true double acting door that swings through in both directions, this is the wrong closer type and you want a double acting (center hung, both-way) floor closer instead. Check which way the leaf is meant to travel before you cut the floor, because the cement case is set in concrete and correcting it later is a demolition job.
2) How do I order the right handing for a Norton Rixson 28 Series floor closer on a pair of doors?
Handing is ordered, not field-reversed on your order form: the 28 Series ships in Left Hand or Right Hand. The 28N-LAP designation is the Left Hand Active Pair build, meaning the left leaf is the active one on a pair. Stand outside the opening, on the side the door swings away from, and the hinge side tells you the hand. Getting it wrong on a floor closer is expensive, since the case is already set in the slab.
3) What is the difference between the 90 degree and 105 degree versions of the Norton Rixson 28 floor closer?
That's the maximum swing the closer is built to allow. The 28 Series is offered in 90 degree and 105 degree, in either hand. Pick by what's beside the opening: if a wall return, sidelite, or adjacent partition stops the leaf near square, 90 degree is the right unit. If the door needs to open past square for cart, gurney, or equipment traffic, order the 105 degree. It's a build option, not an adjustment, so the swing degree is decided at the time of order.
4) What is the equivalent of the Norton Rixson 28 Series floor closer from Dormakaba?
The Dorma BTS75V is the closest peer in the set. Both are concealed in-floor closers certified to Grade 1, and both are non-hold-open: the BTS75V is listed as NHO-Non Hold Open and the Norton Rixson 28 Series carries no hold open feature. The BTS75V ships as a closer body with cement case, less spindle, so the spindle is ordered separately; the Norton Rixson 28 Series uses a cast iron cement case as its cover. Confirm handing and swing degree against the opening either way.
5) If a spec calls for ANSI/BHMA Grade 1 on a floor closer, which of these options meet it?
The Norton Rixson 28 Series is certified to ANSI/BHMA A156.4, Grade 1. Of the Dormakaba peers, the Dorma BTS75V is listed as Grade 1. The Dorma BTS80 is listed as heavy duty but is described by series and duty level rather than by a grade, so for a drawing that names Grade 1 specifically, the 28 Series or the BTS75V are the ones that answer it on paper.
6) Is the Dorma BTS80 a substitute for the Norton Rixson 28 Series floor closer?
They are both heavy duty concealed floor closers, so they compete for the same openings. Two differences decide it. The Dorma BTS80 is sold as a body only, meaning the cement case is not part of that order, while the Norton Rixson 28 Series includes a cast iron cement case. And the BTS80 is listed with a fire rating of no, so on a fire-rated opening it is not the part to write. For a straight body-for-body swap into an existing Dorma case, the BTS80 is the closer match; for a new floor pour, the 28 Series arrives with its case.
7) The existing floor closer in my building is a Dorma and only the closer body failed. Can I order just the body?
Yes, and that is the case where a Dormakaba peer fits better than a full replacement. The Dorma BTS80 is a concealed floor closer body only, and the Dorma BTS75V is a body with cement case, less spindle. If the cement case in the floor is sound and you are not opening the slab, a body-only order avoids the demolition. The Norton Rixson 28 Series comes with a cast iron cement case, which suits a new pour or a case being replaced.
8) Can a floor closer like the Norton Rixson 28 be used on a glass door, or do I need an overhead closer?
The 28 Series works with wood, metal, or glass doors, and that's the usual reason it's chosen over an overhead closer: nothing shows at the head, so a glass entrance or an architectural opening keeps a clean line. The tradeoff is the install. An overhead closer mounts to the door and frame in an afternoon; the 28 needs a floor cavity cut and a cast iron cement case set in the slab. On existing concrete with no provision, that's core work. On new construction or a slab already prepped for a floor closer, it's the straightforward choice.
9) Can I adjust the closing speed on the Norton Rixson 28 floor closer after it's installed in the floor?
Yes. Closing speed, latch speed, and backcheck are all adjustable on the 28 Series after the case is set, which is the setup that matters most on a floor closer since you cannot easily change the unit itself once it's in concrete. Backcheck is the one to pay attention to on an exterior opening: it slows the leaf near full swing so wind does not throw the door into the adjacent wall.
10) Am I getting the cement case with the Norton Rixson 28 floor closer, or is that separate?
The 28 Series is specified with a cast iron cement case as its cover type, which is the housing that gets set into the slab and the closer body drops into. That's worth confirming against the alternatives, because a concealed floor closer sold body only (the Dorma BTS80 is one) assumes the case is already in the floor from a previous unit. If you're cutting a fresh opening, you need the case; if you're dropping a replacement body into an existing case, you don't.
11) Do I need two Norton Rixson 28 floor closers for a pair of doors?
A pair means two leaves, and each leaf gets its own floor closer. The 28N-LAP is the Left Hand Active Pair build, covering the active leaf on that pair; the inactive leaf needs its own unit in the opposite hand. Handing is a per-unit order option (Left Hand or Right Hand), so order by leaf and confirm the swing degree, 90 or 105, matches on both sides of the opening.
12) I need a floor closer that holds the door open. Do any of these do that?
None of them as listed. The Norton Rixson 28 Series has no hold open feature, and the Dorma BTS75V is listed as NHO-Non Hold Open. If the opening needs the door to stand open, that has to come from a hold-open version of the series or from separate hold-open hardware at the opening, not from these non-hold-open bodies.
13) Which floor closer should I standardize on across a facility with single-acting doors?
The Norton Rixson 28 Series is specified for single-acting doors and is a commercial, heavy duty closer certified to ANSI/BHMA A156.4 Grade 1, with handing offered in left hand and right hand and swing degree in 90 and 105. That combination lets one series cover both handings across a floor plan. The Dorma BTS75V is the peer that also carries Grade 1 and is non-hold-open, which is worth knowing if part of the facility is already on Dormakaba cases.
14) Can the Norton Rixson 28 floor closer be used on an exterior entrance?
Yes, it's built for interior and exterior openings. The materials and finishes resist environmental exposure, and the cast iron body with stainless steel components is the construction you want below an exterior threshold where water tracks in. Set the backcheck during commissioning so wind loading on the leaf is controlled.
How fast can I get the Norton Rixson 28N-LAP-RH-105 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 28N-LAP-RH-105 come with a warranty?
Absolutely. The Norton Rixson 28N-LAP-RH-105 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 28N-LAP-RH-105?
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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