VEVOR PEX Heat Transfer Plates, 200 pcs Box Radiant Heat Transfer Plates, 4 ft Aluminum PEX Heat Transfer Plates, 1.27 cm Heat Transfer Plates Designed for PEX TubingProduct Features Premium Plates Kit Amount: 200pcs; Material: Aluminum; Length: 4FT; Width: 4. 25"; Good quality product to provide better heat transfer function for radiant floor system. Wide Application Perfect to improve heat transfer of the system and lower the needed water supply temperature. Power saving product to use at home, apartment, hotel etc.