For Wellis® spas Wellis® Reference : AF00062 Length: 280 mm Height: 145 mm Thickness: 85 mm Color: Light Grey Distance between the center of the fixing points: 145 mm Looked after properly, spa headrests will last for many years. Cracking, discolouring or generally degrading headrests are often an indication that your sanitiser levels are too high. To protect your hot tub pillows, run the jets for at least 15 minutes after you add chemicals to the water. Be sure to leave the cover off when you do this. The chlorine fumes can then escape. Never add chemicals and then replace the cover right away. Doing this will cause both the pillows and the cover to deteriorate quick