Dorma BTS 75 V Floor Spring

This floor spring is to be used with fire doors and general use doors.

Dimensions
Length	Height	Depth
285mm	50mm	82mm

Finish: N/A

Strength: EN 1-4

Non-Handed

Adjustable Closing Speed
Adjustable Latching Action
Back Check
Single and Double Action
Hold Open (option) Max Door Weight 120kg

Image shown of unit only

Cost: There are three cost options available with this product:

Unit Only: £91.31 + VAT
Unit and Foundation Box: £99.78 + VAT
Unit, Foundation Box and Standard Spindle: £109.14 + VAT

Dorma BTS 75 Dummy Unit Box

Suitable to be used in replacement of a BTS 75 unit.

Cost: £48.84 + VAT

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

View the Floor Spring Unit Accessories Page.
Return to the main products page.

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