Rainfresh standard head includes head seal 518. 3/4″ NPT inlet and outlet female threads.  Head for use with all Standard Rainfresh FC series filters including models FC005, FC100, FC200, FC300. Brass vent pin included for easy release of pressure. Easy open design, no special wrench required to open. 518 head seal lubricated with food grade silicone included. Rainfresh Replacement Filter Head Canada. Manufactured using BPA free materials. Water Filters Toronto. Water Filters Canada. Envirogard Products Limited. Buy Rainfresh parts online. Free shipping for orders over $100. For easy solder free installation, use with a Rainfresh connecting kit such as model CK1. Dimensions – 4.75″ wide x 4.75″ deep. Manufactured in Canada using high quality BPA free materials. Attractive light blue colour, highly visable and identified. Rainfresh Water Treatment products are manufactured in Canada. Use only Rainfresh cartridges models CF1, CF1-8, CF2, CF3, HP1, CF1-9, CF2-8, CF3-8, SW60, SW1, SW0.5. Replacement Sump model 520.