4 Pack Pool Cleaner Spring Filters 9991408-R4 for Maytronics Dolphin Nautilus - Replacement Parts for Robotic Pool Cleaners - Keep Your Pool Sparkling Clean

Pool Cleaner Spring Filters 9991408-R4 Spring Filter Cartridges (4 Pack) for the following Pool Cleaners: Dolphin Nautilus Dolphin Triton Dolphin Wave 75 Dolphin Edge Dolphin Quest Dolphin Premier The Spring Filters can also be used in Dolphin Pool Cleaners that have the 9991414-R1 conversion kit: Dolphin Deluxe 4 Dolphin Deluxe 5 Dolphin DX Dolphin Discovery Note: The Spring Filter Cartridges are designed to only trap larger debris and let fine debris pass through to prevent the cartridges from being clogged as quickly when the pool is especially dirty, like when you open the pool in spring.