Large Clear Plastic Bags (Richmond)

Looking for large clear plastic bags that can be used to cover homemade plastic green house frame to keep a large tomato plant during the winter. Can easily go pretty much anywhere from Daly City to Hercules to get them if you have really large one(s). Photo shows the frame and what we used for the last storm - this was cover for a greenhouse type framed wire shelves and was zipped shut until this afternoon. One tomato started to ripen while it was zipped shut from Sunday evening to today.