You will need to contact the manufacturer of your canopy for their suggestions. We do carry snow load rated shelters, theShelterTube shelters by ShelterLogic
. These are available in both gray and green in sizes of 12 x 20 x 11, 12 x 25 x 11 and 12 x 30 x 11. They can resist winds up to 80 mph and snow/ground loads of 43 pounds per square foot (when used correctly).