The slim rain filter is designed for installation within a rainwater storage tank. Rainwater harvesting Filters are very important to making the water usable in any rainwater harvesting system and are used to filter debris from the rain-water as it flows from the collection roof before it enters the storage tank.With only 10 mm lenght difference between inlet and overflow, this filter can be fitted to our underground tanks.There are 6 seperate parts. 4 adaptors (2x tubes for 110 mm and 2x 90 mm intersection), 1x casing and 1x filter.