Enduramaxx Rainwater Harvesting Kit B – 450m² Roof Area
The Enduramaxx Rainwater Harvesting Kit B is a complete filtration system designed to maximise the quality of harvested rainwater for roof catchment areas of up to 450m². Suitable for use with the Enduramaxx Rainwater Harvesting Tank range, the kit efficiently filters debris before water enters the storage tank, helping to provide cleaner stored rainwater for garden watering and a wide range of non-potable applications.
The system includes a Combi Filter Unit, Calmed Inlet and Siphon Overflow, working together to maintain excellent water quality while reducing maintenance requirements. The two-stage filtration process removes leaves, dirt and debris before water enters the tank, while the calmed inlet delivers water gently to the base of the tank, minimising disturbance to settled sediment and helping to oxygenate stored water.
The siphon overflow incorporates a skimming inlet that removes floating debris, oils and surface contaminants before excess water leaves the tank, helping to keep stored rainwater cleaner for longer.
Designed for easy installation and reliable year-round performance, the filter insert can be removed for simple cleaning, while the self-cleaning design helps minimise maintenance.
Please note: Wall bracket not included. It is recommended that the filter is cleaned several times a year, depending on local weather conditions and rainfall levels.
Key Features
- Complete rainwater harvesting filtration kit for Enduramaxx tanks
- Suitable for roof catchment areas up to 450m²
- Includes Combi Filter Unit with lid, Calmed Inlet and Siphon Overflow
- High-efficiency two-stage filtration system
- Self-cleaning design with removable filter insert for easy maintenance
- Calmed inlet reduces turbulence and prevents disturbance of settled sediment
- Oxygenates stored water to help maintain water quality
- Siphon overflow with skimming inlet removes floating debris and surface contaminants
- Suitable for 110mm (4″) downpipes
- Overflow pipe designed to fit a 130mm hole in the storage tank wall
- Filter unit weight: 6.2kg






