الوصف

DORMA BTS *4 is a floor spring for double action doors, with hydraulic fully controlled closing from approx. **0°; including cement box and removeable spindle insert. It 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 shopfitting industry the option of a DORMA quality floor spring designed for their particular purpose.

The BTS *4 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.



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 **0° to 0° and **0° to *0°.

* 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 **0 kg.



For the user

* Thermoconstant smooth operation.

* High mechanical efficiency for easy door opening.

* Optional single point hold open





1) For applications involving particularly high or heavy doors, and doors which have to close against wind or draught conditions, the next larger closer size or the DORMA BTS *0 should be selected.

2) Max. opening **0°. Door stop necessary for doors which can open further than **0°.



Weight = 5.0 kg

Dimensions = **6mm Length x **8mm Width x *0mm Height