Dorma BTS80D Concealed Floor D...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,366.00
$1,309.11
Dormakaba Dorma BTS80D Concealed Floor Door Closer, 3/4" Offset Mounting BTS-80D

Dorma BTS80D Concealed Floor Door Closer, 3/4" Offset Mounting

(No reviews yet) Write a Review

Model: BTS80D-4-74010-RH-626
$2,366.00
$1,309.11
Selected Finish is

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

$2,366.00
$1,309.11
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

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:
Single Acting
Commercial/Residential:
Commercial
Hang Type:
Offset Hung
Product Model:
BTS80D
Product Size:
54"
Fire Rating:
No
Hold Open Feature:
Yes
Mounting Method:
Offset
Product Category:
Door Controls
Department:
Door Hardware

Dormakaba BTS80D-4-74010-RH-626 – Frequently Asked Questions

1) Do I have to order the Dorma BTS80D handed, and how do I tell left from right?
Yes, handing is an order decision on the BTS80D. Each unit is built left hand or right hand, and the hand is baked into the part number (BTS80D374010LH605 is left hand, BTS80D374010RH605 is right hand). Stand outside the door on the side it swings away from: hinges or pivots on your left is left hand. Get it wrong and the closer will not work on the opening.
2) Can I use a Dorma BTS80D on a fire rated door opening?
No. The BTS80D is not fire rated and it has a hold open function, which is exactly what a fire door assembly cannot have unless it releases on alarm. For a labeled opening you need a closer carrying a fire rating and no mechanical hold open. Specify the BTS80D for non-rated entrances only.
3) Does the Dorma BTS80D meet ADA opening force requirements?
No, the BTS80D is not ADA compliant. It uses fixed spring sizes rather than adjustable spring power, and the sizes offered are 3, 4, and 6, which are heavier than what a barrier-free opening tolerates. If the door is on an accessible route, look at a closer specified for ADA opening force or add a power operator.
4) Can a floor closer go in over a thin concrete slab, or do I need a deep pour?
The BTS80 body is compact enough for thin slab concrete subfloor construction, which is the usual reason a floor closer gets ruled out on a retrofit. Spindle selection is what adapts it to the finished floor: a range of interchangeable spindles covers different floor coverings and threshold heights, so the cover plate lands flush with whatever is going down over the slab.
5) Is there a floor closer with the same 3/4 inch offset as the Dorma BTS80D?
Two Norton Rixson floor closers use the same 3/4 inch offset geometry: the 127 Series, a heavy duty 3/4 inch offset closer intended for deep reveal applications, and the 20 Series, a 3/4 inch offset hung closer rated for 180 degree door swing. The BTS80D also mounts at a 3/4 inch offset and is heavy duty. The 3/4 inch dimension is the distance from the door edge to the pivot centerline, so matching it is what lets a replacement drop into the existing floor pocket and top pivot prep without recutting the jamb.
6) Can I order the Norton Rixson 25 Series cement case instead of a Dorma BTS80D floor closer?
No. The Norton Rixson 253000 is a floor closer cement case in galvanized steel, the box that gets poured into the slab to receive a closer body. The BTS80D is the closer itself, a concealed floor closer body that mounts offset and controls the door. A cement case does not close a door and cannot substitute for a closer; it is what a floor closer sits in during new slab construction. If you are replacing an existing closer in a case that is already poured, you need a closer body, not a case.
7) What is the closest heavy duty equivalent to the Dorma BTS80D floor closer for an offset hung door?
The Norton Rixson H28 Series concealed floor closer is built for offset-hung doors and is a heavy duty, Grade 1 closer, which lines up with the BTS80D's heavy duty rating and its offset hung mounting. Both are concealed in the floor rather than surface mounted, so the opening detail stays the same: a floor pocket under the pivot point with the arm hidden. Confirm handing and spindle height against the finished floor when you order either one.
8) Which spring size should I pick on a Dorma BTS80D, 3, 4, or 6?
Spring size is fixed on the BTS80D, so you choose it at the order and cannot dial it in later. Size runs with door width and weight, size 3 for the lighter and narrower leaf, size 6 for the widest and heaviest, size 4 in between. Wind exposure and stack pressure on an exterior entrance push you up a size. Measure the leaf before you commit, because changing your mind means a different closer.
9) Does the Dorma BTS80D hold the door open?
Yes, hold open is included on the BTS80D. Useful on a loading entrance or a lobby door you want propped during move-in, and it is one of the reasons this closer does not belong on a fire rated opening.
10) Is the BTS80D a single acting closer or will it swing both ways?
The BTS80D is set up single acting, so the door swings one direction and returns. The BTS80 body itself is non-handed and covers double acting applications elsewhere in the family, but the D as ordered here is a single acting, offset hung unit with a specified hand. For a door that needs to swing through in both directions, specify a double acting configuration instead.
11) Is the Dorma BTS80D Grade 1?
Yes, the BTS80 Series floor closer is ANSI/BHMA Grade 1 certified, the top commercial durability tier and what most institutional and government specs call for on an entrance. Note that the Grade 1 certification is a durability rating and is separate from fire rating and ADA opening force, neither of which the BTS80D carries.
12) I need a Grade 1 floor closer for an offset hung door but not this brand. What are my options?
The Norton Rixson H28 Series is the closest cross-brand match: a heavy duty concealed floor closer for offset-hung doors, rated Grade 1, same as the BTS80 Series certification. It is the one to price against if your spec names Grade 1 and offset hung but leaves the manufacturer open.
13) What is a lighter duty alternative to the Dorma BTS80D concealed floor closer?
The Norton Rixson 20 Series is a standard duty 3/4 inch offset hung floor closer, where the BTS80D is heavy duty and carries a 660 pound door weight capacity. On a lighter interior leaf that does not see storefront traffic or wind load, the standard duty 20 Series covers the same 3/4 inch offset arrangement. Where the leaf is a heavy glass or wide entrance door, size the closer to the actual leaf weight rather than to the offset dimension alone.
14) Which floor closer should I use for a deep reveal opening instead of the Dorma BTS80D?
The Norton Rixson 127 Series is a heavy duty 3/4 inch offset floor closer specified for deep reveal applications, where the door sits back far enough in the frame that the standard arm reach does not pick up the leaf cleanly. The BTS80D is a heavy duty 3/4 inch offset concealed closer for a conventional offset hung opening. Measure from the face of the frame to the door face before choosing between them, since reveal depth is what decides which arm geometry reaches the door.
15) For a facility standardizing on Grade 1 floor closers, which offset hung models qualify alongside the Dorma BTS80D?
The Dorma BTS80D is ANSI/BHMA Grade 1 certified and heavy duty. Among comparable floor closers, the Norton Rixson H28 Series concealed closer for offset-hung doors is Grade 1 and heavy duty, and the Norton Rixson 253000 cement case is Grade 1 heavy duty for the slab pocket that receives a closer. If your spec calls out Grade 1 across the facility, those are the pieces that carry the rating. Note that the BTS80D is single acting with a hold open feature, so confirm the hold open and swing direction match what your spec allows for each opening.
16) Which floor closer handles a 180 degree swing where the Dorma BTS80D is specified single acting?
The Norton Rixson 20 Series is a 3/4 inch offset hung floor closer with 180 degree door swing capability, in standard duty. The Dorma BTS80D is a single acting offset hung closer, heavy duty, with a hold open feature. If the opening needs the leaf to travel a full 180 degrees against a wall or into a vestibule, the 20 Series covers that swing at the same 3/4 inch offset. Check the leaf weight against the standard duty rating before committing.
17) What finishes does the Dorma BTS80D cover plate come in?
Five: 605 bright brass, 606 satin brass, 613 oil rubbed bronze, 625 bright chrome, and 626 satin chrome. All five are available in both left and right hand, so a pair of doors can be matched. Pick to match the pulls and rails already on the entrance, since the cover is the only part anyone sees once the closer is in the floor.
18) What is the backcheck on the BTS80D for?
Mechanical backcheck slows the door near the end of the opening swing so a gust or a hard shove does not drive the leaf into the adjacent wall or the glass beside it. On a 660 lb exterior entrance that is what protects the door, the frame, and the closer itself.
19) Is the Dorma BTS80D suitable for a residential front door?
It is a commercial product. Heavy duty, fixed spring sizes 3 through 6, and rated to a 660 lb leaf, which is far more closer than a house door needs and heavier to pull than a homeowner wants. For residential, use an overhead closer or none at all. This one belongs on storefronts, lobbies, and institutional entrances.
How fast can I get the Dormakaba BTS80D-4-74010-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 Dormakaba BTS80D-4-74010-RH-626 come with a warranty?
Absolutely. The Dormakaba BTS80D-4-74010-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 Dormakaba BTS80D-4-74010-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 Dormakaba BTS80D-4-74010-RH-626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!