Heater Cover for Jandy Legacy/Laars LG/LD/Raypak Rheem (250K) The new revolutionary Pro-Tech Cover has been designed to cover only the top portion of the appliance with solid material. Designed to let your appliance breathe (no condensation build up). Protects expensive electronic LCD control boards during the closing season Equipped with adjustable straps to ensure a tight fit. Keep out acid rain and block harmful UV light.