Available in two weights
Medium weight 2.7 oz per squared yard Certified Fabric. 72 inches wide. For use on certificated aircraft and most light sport aircraft.
3.7 oz. per square yard, 72 inches wide. Used mainly for warbirds and bush planes. FAA-Approved.
Yes, it is a polyester fabric, as is Dacron, and does heat shrink to get tight.
Yes, both of these part numbers are priced and sold by the yard.
You will need to use fabric adhesive for this. Such as the Superflite U500.