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These units are for internal doors and external doors and gates. We recommend using sealing compound for external applications to help prevent premature corrosion (available to purchase).
This floor spring unit is adjustable, allowing the door to be held open.
Not for use on fire doors due to hold open device.
Please note: The new version is slightly longer in length and has the pivot in a different place i.e. 5mm further forward.
This unit will fit in a Dorma BTS 80 foundation box.
| Length | Height | Depth |
| 342mm | 54mm | 82mm |
Finish: N/A
Strength: EN 3 - EN 6
Non Handed
Single and Double Action
Adjustable Closing Speed
Adjustable Latching Action
Back Check
Hold Open / Adjustable / Non Hold Open
Safety Valve to prevent overloading.
Max Door weight 300kg
Cost: There is one cost option available with this product:
Contact us about this product
Phone London: 020 7242 1777 or Essex: 01277 375 040
View the Floor Spring Unit Accessories Page.
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Hydraulic braking device which cushions the opening of a door i.e. to stop the door hitting a wall.
Contains an extra valve, to allow the door to close at a slower pace i.e. for slow moving traffic.
Door opens one way only.
Door opens both ways.
Door can be held open.
Door cannot be held open.
The unit strength is determined by the door size, weight, external conditions, degree of opening, use and adjustment of unit.
Suitable for either left or right hand doors.
Either left handed or right handed.
Speed of door closure can be adjusted.
Speed of door can be altered for the last stage of door closure.