Our Weathermax Swinging Bed Cover has been custom designed specifically for our beds so that they easily wrap around your chain or rope and Velcro straight down the sides. You may want to put a cardboard box or even a large Beachball under the cover in the center of the bed to prevent the sagging in collection of water. These will only fit beds that we build. Our points of attachment where the rope and chain come through the cover are 32 and 80 inches respectively. This cover Will not fit a twin size Swinging bed frame. Allow 3-4 weeks 🇺🇸