Dorma BTS80B Double Acting Con...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,326.00
$1,308.45
Dormakaba Dorma BTS80B Double Acting Concealed Floor Door Closer for Wood or Steel Door and Frame BTS-80B

Dorma BTS80B Double Acting Concealed Floor Door Closer for Wood or Steel Door and Frame

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Model: BTS80B-4-626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,326.00
$1,308.45
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OVERVIEW

The BTS80 Series of floor-concealed door closers offer adaptability to almost any installation. The closer's compact body permits its use where a larger closer would be prohibitive. Versatility allows installation in thin slab concrete subfloor construction. A wide selection of interchangeable spindles makes the BTS80 suitable for virtually any floor covering or threshold application.

Door closer ANSI/BHMA Grade 1 certified.

  • Concealed installation
  • Fixed spring sizes
  • Non-handed for single and double-acting doors
  • Mechanical backcheck

 

FEATURES

Versatile and adaptable

Because the BTS80 can control exceptionally heavy single- and double-acting doors, you can incorporate the floor closer into almost any design to meet most materials, size, and weight requirements.

Applications

Trouble-free performance under adverse climatic and traffic conditions makes the BTS80 floor-concealed closer dependable and a perfect choice for even the most rigorous applications. For total control and uncompromising creativity for any door opening, specify a BTS80 floor-concealed closer.

 

RESOURCES & DOWNLOADS

Dorma BTS80 Door Closer Technical Brochure

Dorma BTS80 Door Closer Brochure

Dorma BTS80 All Downloadable Guides

Manufacturer Resources

Product Specs

Product Group:
Door Controls
Series:
BTS80 Series
Duty Level:
Heavy Duty
ADA Compliant:
No
Product Subgroup:
Door Closers - Floor
Product Type:
Floor Door Closers
Subcategory:
Floor Closers
Door Weight:
660
Door Swing:
Double Acting
Commercial/Residential:
Commercial
Product Model:
BTS80B
Product Size:
54"
Fire Rating:
No
Hold Open Feature:
Yes
Product Category:
Door Controls
Department:
Door Hardware

Dormakaba BTS80B-4-626 – Frequently Asked Questions

1) How heavy a door can the Dorma BTS80B floor closer handle?
The BTS80B is rated to 660 lb door weight, which is why it gets specified on heavy entrance doors that an overhead closer would struggle with. It is a heavy duty, commercial-rated closer, and it controls both single-acting and double-acting doors without being handed.
2) Will a BTS80B work on a door that has to swing both directions?
Yes, double acting is exactly what the BTS80B is built for. It is non-handed, so the same closer serves a left or right hung opening and a door swinging in and out, which is the usual reason a floor closer gets chosen over an overhead unit in the first place.
3) Can I put a Dorma BTS80 floor closer in a thin slab concrete floor?
Thin slab is a stated application for the BTS80 Series. The body is compact enough for pours where a larger cement case will not fit, and the range of interchangeable spindles lets it come up through whatever floor covering or threshold detail you have on the opening. If your subfloor is deep enough for a full cement case, a Norton Rixson 25 Series cement case closer is the heavier-pocket alternative.
4) Is the BTS80B fire rated or ADA compliant?
No on both counts. The BTS80B is not fire rated and is not ADA compliant, so it should not go on a labeled fire door assembly or on an opening where you need to meet ADA opening force. It is specified as a heavy duty commercial closer for high-traffic entrances, not for barrier-free or labeled openings.
5) What closer size do I order for a BTS80B, and can I adjust the spring later?
Pick the size on the order, because the BTS80 uses fixed spring sizes and cannot be dialed up or down after it is in the floor. The BTS80B comes in size 3, size 4, and size 6. Wider or heavier leaves and exposed entrances take the larger size; get it wrong and the only fix is pulling the closer. Closing speed and backcheck are still adjustable, but spring power is not.
6) Center hung or offset hung, which floor closer do I need?
The BTS80B is the double acting, non-handed choice for a door that swings both ways over the closer. If your door is offset hung with the pivot set in from the edge, that is a different closer entirely: Norton Rixson's 20 Series and 127 Series are 3/4 inch offset hung units, the 127 for deep reveal conditions, and the H28 Series is a heavy duty offset-hung concealed closer. Confirm the hanging condition on the door before you pick, because offset and double acting hardware do not interchange.
7) What is the difference between the Dorma BTS80B floor closer and the Norton Rixson H28 concealed floor closer?
Both are heavy duty, Grade 1 concealed floor closers, but they are set up for different hanging methods. The BTS80B is non-handed for single and double-acting doors and handles doors up to 660 pounds, with a compact body that suits thin slab concrete subfloor construction and a range of interchangeable spindles for different floor coverings and thresholds. The Norton Rixson H28 Series is built for offset-hung doors. If the opening is center-hung and swings both ways, the BTS80B is the direct fit; if the door is hung on an offset pivot, the H28 is the one matched to that geometry.
8) Which floor closer should I use for a deep reveal opening instead of the BTS80B?
The Norton Rixson 127 Series is the heavy duty 3/4 inch offset floor closer built for deep reveal applications. The Dorma BTS80B is a heavy duty concealed floor closer for wood or steel door and frame, non-handed for single and double-acting doors up to 660 pounds, and its spindle selection is aimed at floor covering and threshold variation rather than reveal depth. On an opening where the frame reveal pushes the pivot point out, the 127 Series is the model built around that 3/4 inch offset.
9) Can I order the Norton Rixson 25 Series cement case as a replacement for a BTS80B closer?
No. The Norton Rixson 253000-PKG is a floor closer cement case in heavy duty galvanized steel construction, which is the box that gets set in the floor to house a closer, not a closer itself. The Dorma BTS80B is the operating closer body, Grade 1 certified, non-handed for single and double-acting doors up to 660 pounds, with hold open and mechanical backcheck. A cement case is companion floor work, not a substitute for the closer that controls the door.
10) Does the Dorma BTS80B hold the door open?
Hold open is included on the BTS80B. That matters on loading, move-in, and delivery openings where crews need the leaf to stay put. Because it is not fire rated, hold open here is a convenience function and not something to use on a labeled opening.
11) What finishes does the Dorma BTS80B come in, and can I match the rest of my hardware?
Five finishes across every closer size: 605 bright brass, 606 satin brass, 613 oil rubbed bronze, 625 bright chrome, and 626 satin chrome. Only the cover plate and spindle hardware show once the closer is set, so matching to the existing lever and pull finish on the other doors is straightforward. Sizes 3, 4, and 6 are each offered in all five.
12) Is the BTS80B a Grade 1 closer?
The BTS80 floor closer is ANSI/BHMA Grade 1 certified, which is the top grade for cycle and durability testing and what most institutional and MRO specs call for on an entrance. Among floor closers ZenSupply carries, the Norton Rixson H28 Series concealed closer and the 25 Series cement case are also Grade 1.
13) Will the Dorma BTS80B work on a wood door, or only aluminum storefront?
Wood and steel doors in wood or steel frames are the application for the BTS80B. That is the difference from a lot of floor closers sold into all-glass and aluminum entrances. Between the 660 lb capacity and the spindle selection for different floor coverings, it suits solid core wood entrances and hollow metal doors in commercial lobbies and multi-family common areas.
14) I need a floor closer that swings 180 degrees - does the BTS80B do that or do I need a different model?
The Norton Rixson 20 Series is the model that states 180 degree door swing capability, on a 3/4 inch offset hung arrangement, in standard duty. The Dorma BTS80B is a heavy duty concealed floor closer, non-handed for single and double-acting doors, carrying leaves to 660 pounds with hold open and mechanical backcheck. Where the requirement is written as a 180 degree swing on an offset hung door, the 20 Series matches it directly.
15) For a commercial facility standardizing on Grade 1 floor closers, which models qualify?
The Dorma BTS80B is ANSI/BHMA Grade 1 certified and rated commercial, heavy duty, for doors to 660 pounds with hold open and mechanical backcheck. Among comparable floor closer hardware, the Norton Rixson H28 Series concealed floor closer for offset-hung doors is also Grade 1 and heavy duty, as is the Norton Rixson 25 Series floor closer cement case. Spec the BTS80B where the leaf is center-hung and double acting and the H28 where the doors run on offset pivots, and the facility stays on Grade 1 across both hanging methods.
16) Does a floor closer like the BTS80B slam into an adjacent wall on a windy entrance?
Mechanical backcheck is built into the BTS80, which cushions the door before it reaches full open and keeps wind gusts from throwing a heavy leaf into the wall or the adjacent glass. On an exterior entrance carrying a 660 lb door, that feature is a large part of why the floor closer is specified over a surface unit.
How fast can I get the Dormakaba BTS80B-4-626 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 Dormakaba BTS80B-4-626 come with a warranty?
Absolutely. The Dormakaba BTS80B-4-626 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 Dormakaba BTS80B-4-626?
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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