- Concealed unit
- Special shallow design
- Easy installation
- Optional hold-open
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.
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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
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.
Outstanding value for money
Available with various spring strengths to meet specific requirements
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
Concealed unit for almost invisible installation
Minimum floor recess dimensions
Proven, robust unit for door weights up to 100 kg
Thermoconstant, smooth operation.
High mechanical efficiency for easy door opening.
Optional single-point hold-open