Dorma floor mechanism (BTS80) heavy-duty - for doors of particular height and weight

Dorma floor return mechanism (BTS80) heavy-duty - for doors of particular height and weight.

• Fixed Size Spring Strength (Power Size) EN 3/4/6.
• Maximum door width: 95cm (EN 3) 110cm (EN 4) 140cm (EN 6).
• Maximum door weight: 300kg.
• Adjustable closing speed.
• Fixed backcheck.
• Delayed action (eligible alternative to open detention).
• Adjustable opening (any angle between 75 and 100 degrees).
• It is NOT suitable for fire doors.
• Passed independent test to BS EN 1154.