dampers are used in up aluminium,two damper per door,dampers can stop the door automatically.

This damper rollers are used in the door which needs to stop automatically.This damper rollers use hydraulic pump to control the door movement,can damp the door excellently.it can bearing 50kg,with 50000 circle times.34-42mm is the adjustable range,can fit mostly aluminium.This damper roller use PVC as its main meterial,improve its using life.

name	Bearing name	dimension	material
Top roller	695	34-42mm	Movable Silica gel

Adjustable door damper A