Is the 24 in. x 50 ft. Birch White Aluminum Trim Coil just polyester coated on one or both sides?

Polyester is on both sides of the 24 in. x 50 ft. Birch White Aluminum Trim Coil.

Yes, polyester is on both sides of the 24 in. x 50 ft. Birch White Aluminum Trim Coil.