Cartridge Filter Lid Trimline MK3 White Oring MRB150 Waterproof and chemically resistant —

Waterproof and chemically resistant — designed to stay effective in wet environments and withstand pool and spa chemicals for reliable performance

- DIY enthusiasts who value a compact

- Use a light amount of silicone around the slip-fit joint to create a watertight seal—avoid excessive silicone that could interfere with the eyeball’s alignment

It’s ideal for homeowners aiming for crystal-clear water

Cartridge Filter Lid Trimline MK3 White Oring MRB150 Waterproof and chemically resistant —Comprehensive Guide to the Filter Lid Trimline MK3 Introducing the Cartridge Filter Lid Trimline MK3 with White O ringa purposebuilt upgrade for Trimline cartridge filters. Designed for a precise 214mm outside diameter, this lid pairing combines a durable white O ring with trusted locking rings (62024) to deliver a reliable seal and straightforward maintenance. For those upgrading from MK2, theres also a larger 220mm option (MK2, part 62020) with its