Premium Material: full canopy cover adopt newest secure materials, more wear-resistant and tear resistant.Can withstand 1800mm water pressure, so that the canopy cover have better water resistance. PU coated is good at sunproof, anti-Uv,suitable for all season. Unique Air Vent Design: 12X12 replacement top has two air vent in the roof for air circulation,it can help your canopy to stand stably and not be easily blow away,air circulation takes away the heat and makes you feel cool. Universal Replacement Cover: suitable for most 12ftx12ft canopy (straight leg frame), Attention !!! fits for most of the without peak pole straight legs frame. "Not for any canopy with slant leg " Easy to install: set it up with no tools necessary.Four corners attached to four legs.multiple velcro straps to attach to canopy trusses. Packing List: One 12x12ft Replacement Cover Only,Frame not included！ JANCANOPY 12x12 Canopy Replacement Top with Air Vent PU Coated for Straight Leg Canopy Frame, (Pure White)