Insale Ltd Intex Eco-Friendly Solar Heating Mat for Swimming Pools #28685 Eco-friendly Solar technology that increases the temperature of the pool water by approximately 3-5deg depending on the size of pool and weather conditions. Suitable for above ground pools with a capacity less than 30,280L (8,000gals). Mats can be joined together for bigger pools. Simply attach to a filter pump with flow rate less than 2,500gph (9,463L/h) 1m x 1m surface to absorb sun's rays Dimensions before filling 1.20m x 1.20m. Includes 32mm hose attachment points and 2 B adapters for use with 38mm hoses. Eco-friendly Solar technology that increases the temperature of the pool water by approximately 3-5deg depending on the size of pool and weather conditions. Suitable for above ground pools with a capacity less than 30,280L (8,000gals). Mats can be joined together for bigger pools. Simply attach to a filter pump with flow rate less than 2,500gph (9,463L/h) 1m x 1m surface to absorb sun's rays Dimensions before filling 1.20m x 1.20m.