0.4mm Fish Pond Liner Preforme Garden Pool Membrane Reinforced Landscaping PE Technical Specifications: Material: PE Color: Black Size: 3x3m/9.8x9.8ft Features and Benefits: Suitable for aquaculture, water conservancy maintenance, agriculture, gardens and other places Strong, 0.4mm thick PVC pond liner Weather-resistant, Eco friendly, anti-ultraviolet, extremely long service life Size Guide: Use the following formula to determine the required size. Required liner length = max pond length + 2 x max pond depth Required liner width = max pond width + 2 x max pond depth After determining the number of liners needed, add 50cm to both the length and width to allow some overlap to help hold the liners in place. For Example: If the pond size is 1 x 2 x 1m (length x width x depth): Lining board length = 1m + (2 x 1m depth = 2m) + 50cm overlap = 3.5m Lining board width = 2m + (2 x 1m depth = 2m) + 50cm overlap = 4.5m Total lining required = 3.5 x 4.5m (4 x 5m lining) Package Contents: 1 x Pond Liner