Aquascape Boxed Pond Liner - (comes in 9 standard sizes)

Aquascape 45 mil fish-safe EPDM pond liner leads the industry in quality and reliability. The 45 mil fish-safe EPDM Pond Liner acts as a membrane for retaining water in ponds, Pondless Waterfalls, and other water features.Backed by an industry leading 20-year guarantee, Aquascape is the choice of discriminating pond professionals. Safe for fish and plants Superior elongation and lay-flat characteristics Exceptional resistance to solar UV, ozone and oxidation Ease of installation with no special tools required Durability - 45 mil thickness 20-year guarantee Sizing Suggestions: Calculation: length - add overall length plus twice the maximum depth width - add the overall width plus twice the maximum depth It's recommended to factor in an additional 2' of overlap for around the pond edging. Calculation example:A pond 8ft. Wide x 12 ft. Long and 4 1/2 ft. deep will need a liner 20x 25. Width: 8 + 4.5 + 4.5 + 2 =19, rounded up to 20 Length: 12 + 4.5 + 4.5 + 2 =23, rounded up to