H-Channel cross connectors The system does not require

The system does not require a lot of measuring or monitoring

8mm Twinwall clear polycarbonate cover with aluminum extrusions

Used for inflation

Both types of units have built in limit controls to stop the vent at the perfect position in either the open or closed direction

If you prefer polycarbonate

H-Channel cross connectors The system does not requireAluminum extrusion that joins 8mm twinwall polycarbonate panels on vertical walls. Attaches to flat structural members. H Channel comes in 8 ft. lengths. An over dimension length fee may be added to items 4 ft. and longer. An email will be sent to notify you of the additional fee before your order is shipped.