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Dorma BTS84 Floor Spring Unit - Non Hold Open - Unit, Box & Spindle
Bulk Discount

BTS84 Floor Spring Unit - Non Hold Open - Unit, Box & Spindle


available Available (allow 4 days for delivery)

Bulk discounts available:
Buy 10 or more for £223.79 each

£235.57 inc VAT

Show prices ex VAT

Product Specifications
Floor Spring
Product Description

The BTS 84 is a double-action floor spring which has been specially developed for the aluminum and toughened glass door industries. The BTS 84 has many of the features of the other DORMA BTS closers with the addition of reduced depth and an array of accessories designed for the aluminum door fabricator and toughened glass door manufacturer.

  • Concealed Unit
  • Special Shallow Design
  • Easy Installation
  • Non-Hold Open

Cover plate sold separately.

For double-action doors

Specially designed for the movement patterns of double action doors, the DORMA BTS 84 can be easily adapted to individual requirements. With an installation depth of just 40 mm, it offers the particular advantage of only requiring a shallow pocket, thus enabling problem-free installation

Complement to RTS concealed overhead door closer

This unit is intended to complement our internationally acclaimed RTS concealed overhead door closer by giving the shopfitting industry the option of a DORMA quality floor spring designed for their particular purpose.

Benefits for the trade/distributor

Outstanding value for money

Available with various spring strenghts to meet specific requirements

Benefits for the installer/fabricator

Easy installation thanks to shallow design

Easy to adapt to individual requirements with dual valve control 130? to 0? and 130? to 20?

Interchangeable spindle inserts available to suit site conditions

Benefits for the architect/specifier

Concealed unit for almost invisible installation

Minimum floor recess dimensions

Proven, robust unit for door weights up to 100 kg

Benefits for the user

Thermoconstant, smooth operation.

High mechanical efficiency for easy door opening.


Spring strength - EN4 (29NM

Max door width - 1100mm

Max door weight - 100kg

Features - Adjustable sweep speed, adjustable second sweep speed

Certifications - CE Marked, tested to BS EN 1154

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