Dorma BTS80 Universal Floor Spring – Body Only

Heavy Duty Floor Spring – Power Size EN4 & EN6 for Doors up to 300kg
This heavy duty floor spring offers robust and reliable door control for demanding environments. With selectable power sizes EN4 and EN6, it is suitable for internal or external doors up to 1100mm wide and 300kg in weight. Featuring integrated backcheck and delayed closing action, this unit is ideal for high-traffic locations such as hospitals, care facilities, and commercial buildings.

Key Features & Benefits:

Adjustable Power Sizes EN4 & EN6:
Provides controlled door closing for heavier and wider doors:

• EN4: Suitable for standard commercial door weights

• EN6: Handles extra-heavy doors up to 300kg

High Load Capacity:

• Maximum Door Weight: 300kg

• Maximum Door Width: 1100mm
  Engineered for large, heavy-duty internal and sheltered external doors.

Non-Hold Open Mechanism:
Ensures fire door compliance where hold-open is not permitted. Suitable for fire-rated applications when installed with appropriate accessories.

Integrated Backcheck:
Protects doors and walls by offering resistance when doors are thrown open with excessive force—ideal for busy environments and public access areas.

Delayed Closing Action:
Allows extra time before closing begins—perfect for care homes, hospitals, and wheelchair-accessible routes where users may need more time to pass through.

Dual Handed Design:
For push or pull side installations on both left and right-opening doors—no need for handed units, reducing stock complexity and fitting time.

Additional Information:

• Mounting Type: Concealed floor installation

• Cover Plates: Sold separately – please add to your order if required

• Ideal for: Commercial entrances, hospitals, care homes, high-traffic doors, and accessible environments

• Professional installation recommended for full compliance and performance

Automagic Door Parts supplies floor springs that prioritise durability, fire compliance, and end-user safety. For glass door or double-action configurations, please contact our team to ensure you select the correct spindle and accessory kit.