Description
Product Information
The Dorma BTS75 Floor Springs are designed for versatility and durability, featuring an adjustable strength range of size 1-4. These springs are suitable for both single and double action doors when paired with the appropriate accessory pack.
Available options include models with or without a 90-degree hold open feature. They can accommodate doors weighing up to 120kg and measuring a maximum width of 1100mm. Each unit is rigorously tested to meet BS EN1154 standards and is CE Marked for quality assurance.
Key features include:
- Hold open functionality
- Back check mechanism
- Adjustable closing speed
- Adjustable latch action
For detailed explanations of these functions, please refer to our FAQs.
Product Specification
- Fitting: Concealed - Installed within the floor.
- Standards: Tested to BS EN1154.
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Dimensions:
- Height: 50mm
- Width: 82mm
- Length: 285mm
- Maximum Door Weight: 120kg
- Maximum Door Width: 1100mm
- Strength: Adjustable Size 1-4
- Spindle: Yes - 15mm (excluding 3mm collar).
- Adjustable Closing Speed: Yes.
- Adjustable Latch Action: Yes.
- Delayed Action: No.
- Backcheck: Yes.
- Hold Open: Available with or without hold open (note: hold open model is not suitable for fire doors).
- CE Marked: Products with factory-fitted hold open do not carry a CE mark.
- Handing: Non-handed.