BTS 84 floor spring
Description

Economic, double action floor spring, with optional hold-open, specially developed for aluminium and toughened glass doors.

Features:

  • Concealed unit with minimum floor recess dimension.
  • Suitable for door leaf weights up to 100 kg.
  • Closing speed variable by valve adjustment (130°–0°).

Dimensions:

  • 306 mm long x 108 mm deep x 40 mm high.

General information

Features

Concealed unit with minimum floor recess dimension

Suitable for door leaf weights up to 100 kg

Closing speed variable by valve adjustment (130°–0°)

Uniclass 2015

Pr_30_36_36_29 Floor springsPrimary

CAWS

P21/14 Floor springs

P21/450 Floor springs

Specification data - Floor springs

Product Reference

BTS 84

Spring strength

EN 2

For standard and external doors up to 850 mm wide.

EN 3

For standard and external doors up to 950 mm wide.

EN 4

For standard and external doors up to 1100 mm wide.

Hold-open

90°

105°

Not required

Spindle extension

None

As standard.

5 mm

7.5 mm

10 mm

12.5 mm

15 mm

20 mm

25 mm

28 mm

30 mm

35 mm

40 mm

45 mm

50 mm

Coverplate

Satin brass

Stainless steel

Accessories

DORMA 2300 sealing compound

Standard product features

Independent testing:

Successful independent testing to BS EN 1154.

Product Options

Spindle extension:

A range of interchangeable spindles is available to provide greater floor clearance if required (e.g. doors with thresholds, carpeted floors). Special spindles available on application: e.g. with flat face profile and 3° offset or square section; spindles for non-DORMA-specific accessories are also available.

Accessories:

  • DORMA 2300 sealing compound – For filling cavities between floor spring body and cement box to protect against moisture penetration.
  • Contact DORMA for Information about other accessories, such as door straps and top centres.

Literature
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