Dorma RTS88 Series - RTS20 Ove...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$950.00
$681.83
Dorma RTS88 Series - RTS20 Overhead Concealed Door Closer, Center Hung End Load, Double or Single Acting, Aluminum Door and Frame Application (Non-Handed)

Dorma RTS88 Series - RTS20 Overhead Concealed Door Closer, Center Hung End Load, Double or Single Acting, Aluminum Door and Frame Application (Non-Handed)

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Model: RTS20 105 NHO SZ3
$950.00
$681.83
Selected Finish (Including 8653 Cover Frame) is

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

$950.00
$681.83
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DORMA RTS88 Series Overhead Concealed Door Closer

The RTS88 is designed to give lasting, dependable service where surface applied units and other types of closers are not suitable, or would interfere with the architectural design. It can be easily installed in wood, aluminum, or hollow metal doors and frames, for single and double-acting doors.

  • Concealed installation
  • For single and double-acting doors
  • Dependable and easy to Install

Aesthetic advantages

Architects are often challenged to design buildings that are both beautiful and functional, down to the last detail. The DORMA RTS88 overhead concealed door closer offers the perfect solution for those who prefer the aesthetic advantages of a concealed door closer.

Vandalism protection

The RTS88 is an excellent replacement closer for problem entrances encountering vandalism of surface applied closers.

Benefits for the contractor

Contractors appreciate the RTS88 closer, because the majority of door and frame preparation is done prior to installation of the unit, resulting in less on-site machining.

Resources:
RTS88 Series Catalog

Manufacturer Resources

Product Specs

Product Group:
Door Controls
Series:
RTS Series
Product Subgroup:
Door Closers - Overhead Concealed
Product Type:
Overhead Concealed Door Closers
Subcategory:
Concealed Door Closers
Door Weight:
250 lbs
Door Swing:
Single or Double Acting
Commercial/Residential:
Commercial
Package Features:
CH End; Aluminum Door and Frame
Product Model:
RTS20
Door Hand Direction:
Non-Handed
Product Category:
Door Controls
Department:
Door Hardware

Dormakaba RTS20 105 NHO SZ3 – Frequently Asked Questions

1) How heavy a door will the Dorma RTS20 overhead concealed closer handle?
The RTS20 is rated for doors up to 250 lbs. That covers most aluminum storefront and entrance leaves. If your opening is lighter, a 200 lb rated unit like the Norton Rixson 608 Series center hung closer or the 700 Series will also do the job; for another 250 lb center hung double acting option, the Norton Rixson 73 Series is the comparable.
2) Is the RTS20 closer handed, or does one unit work on both left and right doors?
One unit covers both hands. The RTS20 is non-handed and works single acting or double acting, so you do not have to specify swing direction when you order. That also means a property manager stocking spares only needs one body for a run of entrances.
3) Which spring size should I order on a Dorma RTS88 concealed closer for a 3'-0" exterior entrance?
Spring size is the main ordering decision. SZ3 is the standard closing force for 3'-0" to 3'-6" interior doors and 2'-6" to 3'-0" exterior doors, so a 3'-0" exterior leaf takes SZ3. SZ4 is the strongest, sized for 3'-6" to 4'-0" interior and 3'-0" to 3'-6" exterior. SZ2 is a light opening force. If you need reduced opening force for accessibility, order BFE for exterior 3'-0" doors or BFI for interior 3'-0" doors.
4) We have an offset hung aluminum entrance, not center hung. What concealed closer should we use instead of the RTS20?
The RTS20 is prepared for a center hung end load installation in aluminum doors and frames, so it will not suit an offset pivot opening. The Norton Rixson 0608 Series is an offset hung overhead concealed closer for aluminum doors up to 200 lbs, rated standard duty. Confirm the door leaf weight is within 200 lbs before specifying it.
5) The opening needs to swing 180 degrees. Is the RTS20 the right closer?
The RTS20 is built with a cushion stop at either 90 degrees or 105 degrees, so it is not the unit for a 180 degree opening. The Sargent 269 is an overhead concealed closer with 180 degree opening capability, listed as heavy duty Grade 1.
6) What is the closest equivalent to the Dorma RTS20 overhead concealed closer from another manufacturer?
The Norton Rixson 73 Series is the nearest match. Like the RTS20, it is a center hung overhead concealed closer rated for 250 lb doors, it is double acting, and it comes with a cover plate. It is listed as heavy duty and Grade 1. The RTS20 covers the same center hung end load position for aluminum door and frame applications and is non-handed for single or double acting doors, with spring sizes from BFI and BFE barrier free through SZ4 for 3'-6" to 4'-0" interior doors.
7) I need a hold-open concealed closer. Which of these offer that?
The Dorma RTS20 is available in hold open and non hold open versions, with either a 90 degree or 105 degree cushion stop. The CRL Jackson 20-101M bodies, by contrast, are all non hold-open units, including the regular duty 90 degree and 105 degree versions and the heavy duty 105 degree version.
8) Our spec calls for an ANSI Grade 1 concealed closer. Which options meet that on paper?
The Norton Rixson 73 Series and the Sargent 268, 269 and 278 are all listed as Grade 1 heavy duty overhead concealed closers. The Sargent 268 has a cast iron body, the 269 opens to 180 degrees, and the 278 uses an exposed arm. If your spec also requires a center hung double acting unit at 250 lbs, the Rixson 73 is the one of those that states that arrangement.
9) Can I get the RTS20 with a hold open, and at what degree does it stop?
Hold open is an option, ordered yes or no. Separately you pick the cushion stop point, either 90 degrees or 105 degrees, which sets where the closer cushions the swing. Pick the 90 degree cushion where a sidewall or adjacent leaf limits the swing.
10) What package options are there on the RTS20 besides the closer body?
Three package choices: Standard, Add 8563 Frame Cover Plate, or With 5mm Extended Spindle. The extended spindle is the one to take when the top rail or shoe depth needs the extra spindle length. The finish selection, including the 8653 cover frame, comes in 600 Prime Coat, 689 Aluminum, 690 Statuary Bronze, 691 Dull Bronze, 693 Black, 695 Dark Duradonic Bronze and 696 Gold.
11) Can a concealed closer like the RTS88 be used on wood or hollow metal doors, not just aluminum?
The RTS88 family installs in wood, aluminum, or hollow metal doors and frames. The RTS20 specifically is the package prepped for aluminum door and frame applications, so if your opening is wood or hollow metal you want a different package within the series.
12) We keep losing surface closers to vandalism at our entrances. Is an overhead concealed closer a fix?
That is exactly the case the RTS88 is made for. With the closer concealed in the head frame there is no exposed body or arm to rip off or tamper with, and it keeps the door line clean where a surface closer would clash with the architecture. Most of the door and frame prep happens before the unit goes in, so there is less machining on site.
13) Can I order just a closer body to drop into an existing concealed pocket instead of a full RTS20?
The CRL Jackson 20-101M series is sold as a closer body only, in regular duty (105 degree and 90 degree non hold-open), heavy duty 105 degree non hold-open, and an adjustable spring power version with 105 degree non hold-open. Those are bodies without the balance of the package. The RTS20 is supplied as a center hung end load unit for aluminum door and frame applications and can be ordered with the 8563 frame cover plate or with a 5mm extended spindle.
14) Does the Sargent 278 give the same fully concealed look as the Dorma RTS20?
No. The Sargent 278 is an overhead concealed closer with an exposed arm, so the arm remains visible at the head of the door. The RTS20 is a concealed installation intended where surface applied units would interfere with the architectural design, and it is also promoted as a replacement where surface applied closers have been vandalized.
15) We need a barrier free low opening force closer on an aluminum storefront. Which unit covers that?
The Dorma RTS20 is ordered by spring size and includes BFE for barrier free light opening force on exterior doors at 3'-0" width and BFI for barrier free light opening force on interior doors at 3'-0" width, plus an SZ2 light opening force option. It is a commercial, non-handed unit for aluminum door and frame applications. The comparable Norton Rixson and Sargent concealed closers are described by duty level and hung type rather than by a barrier free spring selection.
16) Is the Dorma RTS20 a commercial grade closer or light duty?
It is a commercial unit, rated to 250 lb doors and offered in five spring sizes. If you are specifying Grade 1 across a facility, the peers we carry that state a Grade 1 rating are the Norton Rixson 73 Series and the Sargent 268, 269 and 278 concealed closers.
How fast can I get the Dormakaba RTS20 105 NHO SZ3 delivered?
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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 RTS20 105 NHO SZ3 come with a warranty?
Absolutely. The Dormakaba RTS20 105 NHO SZ3 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 RTS20 105 NHO SZ3?
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