3.0 Mil Mylar film 25" X 500' roll

3.0 mil (76.2 micron) Dupont 377 Light Polyester film 25" X 500' roll (63.5cm X 152m)
3.0 mil (76.2 micron) Dupont 377 Light Polyester film 25" X 500' roll (62.2cm X 152m) weight: 26LBS (11.8 kilos).

This is An excellent choice for boats greater then 1 meter, for example Santa Barbaras and J boats. Some sailmakers use 3.0 mil stock as split panels at the head and foot of the mainsail to assist in keeping an airfoil shape.