Resizes 500mm tank inlet hole to 400mm so compatible with inlet kits with screw down ring. Made from High Density PolyEthylene (HDPE).
How to install the 500 to 400mm Adaptor Ring
- 8x pre-drilled holes on outer edge to attach adaptor to the tank.
- 3x pre-drilled holes on inner edge to attach inlet rings.
IMPORTANT:
- Use 8 Gauge Pan-Head Screws for installation.
- Don’t over-tighten screws – screw in gently and slowly.
- Watch the video below for a demonstration:







