Description

Dorma Floor Spring BTS84 EN2 – Hold Open (with 8410 Cover)

The Dorma BTS84 EN2 is a compact, reduced-depth double action floor spring designed for aluminium and toughened glass doors. It is supplied complete with a cement box and 8410 cover plate, providing a finished installation suited to lighter commercial door applications.

Non-Returnable Item
This product is a special order and is not returnable.

Key Features

Compact, reduced-depth floor spring for aluminium and glass doors.
Double action operation.
Hold-open function for controlled door positioning.
Supplied with cement box and 8410 cover plate.

Specifications

Product Type	Double action floor spring
Spring Strength	EN2
Hold Open	Yes – 90° or 90°/105° (variant dependent)
Mechanical Backcheck	No
Maximum Door Weight	100 kg
Maximum Door Width	850 mm
Overall Dimensions	306 mm x 108 mm x 40 mm
Approximate Weight	5.0 kg

Suitable Uses

Aluminium framed doors.
Toughened glass doors.
Commercial doors requiring a compact floor spring solution.

Available Variants

Item Code	Hold-Open Setting
DOBTS842HO	90°
DOBTS842	90° / 105° (installer adjustable)

Item Code Family

Floor Spring System	Spring Range	Key Characteristics	Typical Applications
This Product – BTS84	EN2	Compact reduced-depth body, no backcheck, hold-open variants	Aluminium and toughened glass doors up to 100 kg
BTS75 V	EN1–4 Adjustable	Mechanical backcheck, adjustable spring strength	Medium commercial doors up to 120 kg
BTS80	EN3 / EN4 / EN6	Heavy duty, mechanical backcheck, wide adjustable hold-open	Wide or heavy doors up to 300 kg

Frequently Asked Questions

Is this floor spring fire rated?
No. The BTS84 EN2 is not fire rated.

Does this model include mechanical backcheck?
No. This model does not incorporate a mechanical backcheck.

What does “extended spindles” mean?
Extended spindles are optional accessories used when additional height adjustment is required. Refer to installation guidance.