These heavy duty drain tarps or roof leak diverters are designed to protect personnel and equipment from overhead leaks. Made out of heavy duty flame retardant 13 oz. translucent vinyl. The drain spout connects to 3/4 hose (not included) which serves as the downspout. Custom sizes available upon request. Pre-finished size tarpauline may actually finish 3-5% less in size. Need to specify on the PO if a specific finished sizes is required.