BTS80 Size 4 Floor Spring

The Dorma BTS80 Floor Springs are designed for versatility and reliability, featuring a fixed strength size 4. These floor springs are suitable for both single and double action doors when paired with the appropriate accessory pack.

Capable of supporting doors weighing up to 300kg and measuring a maximum width of 1100mm, these floor springs have been rigorously tested to meet BS EN1154 standards and are CE Marked for quality assurance.

Key features include:

• Hold Open: Allows the door to remain open at any angle between 75 and 175 degrees (note: hold open variants are not suitable for Fire Doors).
• Back Check: Prevents the door from being opened too forcefully.
• Delayed Action: Provides a controlled closing speed for safety.
• Adjustable Closing Speed: Customize the speed at which the door closes.
• Adjustable Latch Action: Fine-tune the latch mechanism for optimal performance.

Product Specification

• Fitting: Concealed - installed within the floor.
• Tested to: BS EN1154.
• Height: 60mm
• Width: 78mm
• Length: 341mm
• Maximum Door Weight: 300kg
• Maximum Door Width: 1100mm
• Strength: Fixed Size 4
• Spindle Options:
• Yes - BTS80EN4 - 15mm (excluding 3mm collar)
• No - BTS80F
• Adjustable Closing Speed: Yes
• Adjustable Latch Action: Yes
• Delayed Action: Yes
• Backcheck: Yes
• Hold Open: Adjustable between 75 and 105 degrees.
• CE Marked: Yes
• Non Handed: Yes