Drive unit and brake for fire resisting doors

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System used to limit the run's speed of a fire proof sliding door

Hydraulic dampers for sliding doors

Opera Srl - Art. 60000

Body in aluminium, dimension mm.100x50x55

Pully in steel diameter mm.60

System used to limit the run's speed of a fire proof sliding door.

Screw adjustement of the refrained system.

60001 - Version with 3 pulleys