Roll-Over curtain system is a poly curtain that cover the sidewall ventilation openings on a livestock housing building when closed. When ventilation air is needed for fresh air supply or temperature reduction, the curtain can be opened from the top downwards to provide some, or more, opening as needed to let air into & through the building.
Roll-Over curtain systems open the curtain material, instead of simply folding downwards, is rolled onto a pipe that rotates at the bottom of the curtain. The top mounted cable system, with spaced drop cables attached to the top of the curtain, lowers, or raises the curtain as needed to make opening size changes. This cable system is also attached to a rotating drum, at one end of the bottom pipe. This drum also connects to the bottom pipe by a adapter or universal joint equipped shaft to make this cable on/cable off operation and bottom rotating pipe a combined operation.
1 Different motor drives available, in end drive or middle drive option
2 Maximum opening can be 3 meter, and maximum length of curtain can be 60 meter
3 Curtain can be opened from top downwards, fresh air can bring in from top of the curtain
4 Can be controlled with thermostat, temperature sensor
5 Work with cable drum, universal joint, gears, pulley etc
| Motor DC 24V | Fabric Weight | Opening size | Drive | Curtain length | Roll up tube |
| GMD(120N.m) 120-S |
300g/m2 | 2.4 meter | End drive | Max of 25 m | 50mm OD aluminum tube |
| GMD150-D (150N.m) |
300g/m2 | 2.4 meter | Middle drive | Max of 40m | 50mm OD aluminum tube |
| GMD200-D (200N.m) |
300g/m2 | 2.4 meter | Middle drive | Max of 60m | 50mm OD aluminum tube |
Specification: Curtain fabric of 300g/m2, opening of 2.4 meter, end drive or middle drive, roll up tube of 50mm
