Floor spring for double action
doors, with hydraulic fully
controlled closing from
approx. 130°; including
cement box and removeable
spindle insert.
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 shopfitting
industry the option of
a DORMA quality floor
spring designed for their
particular purpose.