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Dorma BTS80

Floor Closer Body and Cement Case

Quick Product Details

  • Floor Closer Body and Cement Case
  • For interior and exterior doors
  • Offset/Center-hung
  • Heavy Duty
  • Single/Double-acting

Price: $556.00 /each

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This Dorma BTS80 is a non-handed, compact floor closer body and cement case suitable for thin slab concrete construction in interior or exterior applications. This floor closer body can be used with offset or center-hung, heavy, single or double acting doors weighing up to 660 pounds. The wide selection of spindles available makes this closer body adaptable for use on almost all floor covering and threshold applications.

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Price: $556.00

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Select either Standard Spindle insert or 3° Pre Load Spindle


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BTS80 - Accommodates doors weighing up to 660 pounds

  • Barrier Free (BFE) - ANSi size 3:
    • Exterior Doors to 3'0".
    • Handicapped accessible, reduced opening force.
    • Opening force 8.5 lb or less on exterior doors to meet ADA requirements (Americans with Disabilities Act ) A117.1.
    • Not available with​ backcheck
  • Size 2 - ANSI size 4
    • Exterior Doors 2'6"- 3'6"
    • Interior Doors 2'6"- 4'0"
  • Size 3 - ANSI size 6
    • Exterior Doors 3'6"- 4'0"
    • Interior Doors 4'0" - 4'6"

Maximum door widths and recommended sizes shown are for average conditions. If there are unusual site conditions, e.g. high or exceptionally heavy doors or wind pressure, the next stronger spring size should be selected.


  • Meets ANSI A156.4 Grade 1 requirements
  • 25 year limited warranty

Available Options: Choose Options Above

  • Spindle: info icon

    • No Spindle
    • Spindle Insert- 5/16"clearance (74003)
    • 1/2"Clearance (74005)
    • 5/8"clearance (74007)
    • Standard 3/4"clearance (74010)
    • 13/16"clearance (74012)
    • 7/8"clearance (74015)
    • 1-1/8"clearance (74020)
    • 1-5/16"clearance (74025)
    • 1-1/2"clearance (74030)
    • 1-11/16"clearance (74035)
    • 1-7/8"clearance (74040)
    • 2-1/16"clearance (74045)
    • 2-5/16"clearance (74050)
    • Pre Load Spindle 5/16"clearance LH (80003)
    • Pre Load Spindle 5/16"clearance RH (80003)
    • Pre Load Spindle 3/4"clearance LH (80010)
    • Pre Load Spindle 3/4"clearance RH (80010)
    • Pre Load Spindle 7/8"clearance LH (80015)
    • Pre Load Spindle 7/8"clearance RH (80015)
    • Pre Load Spindle 1-1/8"clearance LH (80020)
    • Pre Load Spindle 1-1/8"clearance RH (80020)
    • Pre Load Spindle 1-5/16"clearance LH (80025)
    • Pre Load Spindle 1-5/16"clearance RH (80025)
    • Pre Load Spindle 1-1/2"clearance LH (80030)
    • Pre Load Spindle 1-1/2"clearance RH (80030)
  • Spring Size: info icon

    • Barrier Free (BFE) - ANSI Size 3
    • Size 2 - ANSI Size 4
    • Size 3 - ANSI Size 6

Product at A Glance

  • Dual valves allow for adjustment of the closing-speed and latch-speed
  • Pressure relief valve protects the closer from damage caused by forced closing.
  • Closer adjustment in the cement case provides lateral and longitudinal adjustment of 1/4”, and height adjustment of 5/32".
  • Mechanical backcheck at approximately 70º. (Not Available with BFE)
  • Selectable delayed action between 75º and 175º.
  • Selectable multi-point hold-open between (approximately) 75º and 175º
  • Delayed action is functional when hold-open is not engaged.
  • Suitable for thin slab construction
  • It is strongly recommended that closers installed on exterior openings be sealed with Dorma's SC2 Weather Sealing Compound.
Style Floor Closer Body and Cement Case
Application Offset/Center-Hung
Door Handing Non-handed
Function Single/Double-Acting
Door Weight Up to 660 lb
Depth 2-3/8" - for thin slab construction

The high quality performance, uncompromised standards and versatility of this BTS80 closer make it widely popular for use in very many applications. It can be used in center-hung or offset installations on single or double acting doors  that weigh up to six-hundred and sixty pounds. To make this closer adaptable to nearly all floor covering conditions, we offer a wide variety of spindle options to suit the needs of virtually any application.




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