Dorma BTS 80F Floor Spring

This unit is specially designed for use on fire doors.

Dimensions
Length	Height	Depth
341mm	60mm	78mm

Finish: N/A

Strength: EN 4, EN 5, EN 6

Universal Model to Close from 175° Double Action
Handed Model to Close from 180° Single Action
Adjustable Closing Speed
Adjustable Latching Action
Back Check
Non Hold Open only as intended for use on Fire Doors
Max Door Weight 300kg

Cost: There is one cost option available with this product:

BTS 80 F Unit and Foundation Box EN4 (Universal Model) : £204.90 + VAT

Phone London: 020 7242 1777 or Essex: 01277 375 040

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Glossary of Terms

Back Check

Hydraulic braking device which cushions the opening of a door i.e. to stop the door hitting a wall.

Delayed Closure

Contains an extra valve, to allow the door to close at a slower pace i.e. for slow moving traffic.

Single Action

Door opens one way only.

Double Action

Door opens both ways.

Hold Open

Door can be held open.

Non Hold Open

Door cannot be held open.

Strength

The unit strength is determined by the door size, weight, external conditions, degree of opening, use and adjustment of unit.

Non Handed

Suitable for either left or right hand doors.

Handed

Either left handed or right handed.

Adjustable Closing Speed

Speed of door closure can be adjusted.

Adjustable Latching Action

Speed of door can be altered for the last stage of door closure.

Able Door Spring Company. Est. 1978