Able Door Spring Company. Est. 1978
“ All orders over £500 get free delivery ”
Products - Floor Spring Units
We have a small selection of products available at trade price, for all parties to purchase. These products are used
by our engineers on a daily basis and therefore we are confident that they are of the highest quality.
We can provide prices for many other items on request contact us.
The prices stated below are non inclusive of VAT.
Floor Spring Units
Dorma BTS 75 V
This floor spring is to be used with fire doors and general use doors.
| 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: £86.96
- Unit and Foundation Box: £95.03
- Unit, Foundation Box and Standard Spindle: £103.94
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Dorma BTS 75 Dummy Unit Box
Suitable to be used in replacement of a BTS 75 unit.
- Cost: £46.51
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Dorma BTS 80
This is a hydraulic stand open device, which allows the door to be set to a particular degree of opening. Available in 3 different strengths, to cope with many sizes and weights of doors. Not for use on Fire Doors due to stand open device.
| Length | Height | Depth |
| 341mm | 60mm | 78mm |
Finish: N/A
Strength: EN 3, EN 4 or EN 6
Non-Handed
Adjustable Closing Speed
Back Check
Delayed Closure
Single and Double Action
Hold Open - Adjustable
Max Door Weight 300kg
Cost: There are four cost options available with this product:
- BTS 80 Unit Only EN 4: £181.55
- BTS 80 Unit and Foundation Box EN 4: £195.14
- BTS 80 Unit and Foundation Box EN 6: £195.14
- BTS 80 Unit, Foundation Box and Standard Spindle EN 4: £204.04
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Dorma BTS 80 Dummy Unit Box
Suitable to be used in replacement of a BTS 75 unit.
- Cost: £61.40
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Dorma BTS 80EMB
This is an electronic hold open unit, onto the Fire Alarm system. Available in 3 different strengths. Please note that this unit has aproximatly 40mm added to the length below to allow for the plug connector.
| Length | Height | Depth |
| 341mm | 60mm | 78mm |
Finish: N/A
Strength: EN 4, EN 5, EN 6
24volt DC Electromagnetic Hold Open
Universal Model to Close from 175° Double Action
Handed Model to Close from 180° Single Action
Adjustable Closing Speed
Adjustable Latching Action
Back Check
Hold Open – Electronic
Max Door Weight 300kg
- BTS 80 EMB Unit and Foundation Box EN4, EN5 and EN6
(Universal Model): ALL £391.87
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Dorma BTS 80F
This unit is specially designed for use on fire doors.
| 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) : £195.14
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Dorma BTS 84
These units were specifically designed for aluminium and toughened glass doors. These units are also shallow in depth making them more suitable for certain locations than other units.
| Length | Height | Depth |
| 306mm | 40mm | 108mm |
Finish: N/A
Strength: EN 2, EN 3, EN 4
Adjustable Closing Speed
Hold Open (option)
Single or Double Action
Max Door weight 100kg
Cost: There is one cost option available with this product:
- BTS 84 Unit and Foundation Box (Hold open or Non Hold open) EN 4: £11721
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Geze TS 500
These units are for use on internal doors. Please Note: this unit is has been re-sized in the past.
| Length | Height | Depth |
| 278mm | 50mm | 82mm |
Finish: N/A
Strength: EN 1 - EN 4
Non Handed
Single and Double Action
Adjustable Closing Speed
Adjustable Latching Action
Hold Open (option)
Back Check
Safety Valve to prevent overloading
Max Door weight 250kg
Cost: There are two cost options available with this product:
- Geze TS500 Unit, Foundation Box and Standard Spindle Stand Open EN: £99.63
- Geze TS500 Unit, Foundation Box and Standard Spindle Non Stand Open EN: £102.50
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Geze TS 550
These units are for use on internal doors. This floor spring unit is adjustable, allowing the door to be held open.
| Length | Height | Depth |
| 328mm | 54mm | 82mm |
Finish: N/A
Strength: EN 2 - EN 5
Non Handed
Single and Double Action
Adjustable Closing Speed
Back Check
Hold Open - Adjustable
Safety Valve to prevent overloading.
Max Door weight 250kg
Cost: There is one cost option available with this product:
- Geze TS550 Unit, Foundation Box and Standard Spindle EN: £203.21
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View the Floor Spring Unit Accessories Page.
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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.