Aluminium heat spreader plates are 390mm x 1000mm x 0.3mm (groove
Depth: 16mm) diffiuser plates suitable for joist centers of 400mm. Spreader plates are laid across traditional joists & fixed in place using a hand stapler. Pro Warm™ European Standard Pex-Al-HDPE pipe is fixed in the grooves of the plates, insulation is placed in the void below the plates to minimise downward heat loss & dissipate the heat even across the floor. This product is designed for use with 15mm or 16mm pipe. Please note; If you are looking to purchase spreader plates, you will need to purchase a High Output or Multi Room kit as these have pipe spacings of 200mm Standard room kits have a pipe spacing of 250mm