Description
The Economic Double Action Floor Spring
Special shallow design optional hold-open. The DORMA BTS 84 is a double action floor spring which has been specially developed for the aluminium and toughened glass door industries.
This unit is intended to complement our internationally acclaimed RTS concealed overhead door closer by giving the shop fitting industry the option of a DORMA quality floor spring designed for their particular purpose.
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 aluminium door fabricator and toughened glass door manufacturer.
Certified to ISO 9001.
Benefits
- For the trade
- Outstanding value for money.
- Also available with stronger and weaker springs for special requirements.
- For the installer
- 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.
- For the architect/specifier
- Concealed unit for invisible installation.
- Minimum floor recess dimension.
- Proven, robust unit for door weights up to 100 kg.
- For the user
- Thermoconstant smooth operation.
- High mechanical efficiency for easy door opening.
- Optional single point hold-open
Specification text
Floor spring for double action doors, with hydraulic fully controlled closing from approx. 130°; including cement box and removable spindle insert.
Size
EN 2
EN 3
EN 4
Models
Standard
Hold-open 90°
Accessories
Universal cover plate
Stainless steel
Satin brass
Extended spindle insert,
. . . mm extended
Sealing compound
