General description John Guest Speedfit Underfloor Heating JGUFHSP165 Spreader Plate is designed for use with I beam joists and composite joists, providing a reliable solution for underfloor heating systems. The plates are fixed from below, ensuring stability and efficiency in heat distribution. Technical specifications Brand: JG Speedfit Manufacturer ID: JGUFHSP165 Type: Speedfit Size: 165 mm x 250 mm Pack quantity: 20 Usage Speedfit Pipe is securely fixed in the grooves of the plates, while insulation is placed in the void below the plates to minimize downward heat loss, enhancing the overall efficiency of the heating system.