Good ventilation below, what-ever the weather. Easily fixed over a hatch to become an oversized dorade vent that can be turned in any direction to suck in air and keep out the weather. It also incorporates a bug screen so you’ll sleep easily at night. Made from UV resistant, PU coated ripstop polyester for long life in all climates. Available for hatches that are 50cm x 50cm or 60cm x 60cm.