Dorma BTS80 Floor Spring

Floor spring system for single- and double-leaf doors

As a universal floor spring, the BTS 80 has been designed to meet the requirements of doors of all types. With its many individually combinable extras, it is able to satisfy almost every application requirement. Once installed below floor level, the mechanism is almost completely concealed from view.

Certified manufacture to ISO 9001.

Universal application

Whether standard, narrow or wide, whether LH, RH, or single or double action – the DORMA BTS 80 floor spring is designed for all types of doors. A comprehensive program of accessories ensures that it can be used successfully with a wide variety of door constructions and floor coverings.

Three model variants

The BTS 80 system with its three model variants BTS 80 F (for fire and smoke check doors), BTS 80 EMB (with electrohydraulic hold-open), and BTS 80 FLB (with free-swing function), plus the wide range of accessories available, offers effective adaptability to various door designs and -functions.

Benefits for the installer/fabricator

Suitable for installation with LH or RH single- and double-action doors

Interchangeable spindles enable easy adaptation to structural conditions – even when retrofitted

Benefits for the architect/specifier

Concealed installation for maximum visual elegance

All essential functions provided

Proven, robust design capable of withstanding leaf weights of up to 300 kg

Benefits for the user

Constant, temperature independent closing cycle.

Highly efficient mechanism gives maximum user convenience.