GHP Green UV30+ Polyester 17' x 6-1/2' Pergola Canopy Replacement Cover Replacement cover for your existing metal or wood pergola frame 200g/sqm polyester layer + PA coating More effectively for harmful UV blocking Half a year longer life time than other canopies without coating Thicker and more durable than other 160g/sqm or 180g/sqm polyester canopies