Condensation can be a problem with tightly fitted covers made from fabrics which do not breath. Add these lightweight vents to get the needed air circulation. Made from a tough, pliable plastic which snaps back without damage after being folded or flattened. Phifertex mesh can be sewn in the throat area to keep out rodents. Size: opening at throat 5-inches, approx. length 6-inches.
For sewing supplies visit: http://www.sailrite.com
To order Vents visit: http://www.sailrite.com/Vent-Aire-Ventilator