Brand new to our extensive range of drainage products. 100% stainless steel unit with unique compression installation & external hinge, ensuring pipe maintains maximum flow capacity and the unit cannot be dislodged into the drainage run. Can be configured to suit both outlet and inlets and an optional ground level installation pole is also available. The valve should be positioned within the manhole or inspection chamber where the flap will open to allow water to escape but also prevents the rats from entering the chamber. Research has indicated that a metal rodent device manufactured from stainless steel will be more effective than a similar one manufactured from plastic as it will withstand rat gnawing. Once installed into the sewer drain manhole, it is virtually maintenance-free, as it works on its own to stop rats from getting into your home or workplace. We also sell the Ratwall installation pole to suit both 110mm and 150mm Ratwall units, manufactured from stainless steel. The pole simply screws onto the threaded stud on top of the unit allowing you to compress the walls of the Ratwall and insert within your pipework There is no silicone or securing cable required for installation. Please use the drop-down menu to order. Please note that when the device has been inserted into the drains, the product is then classed as a sanitary item and cannot then be returned. This does not affect your statutory rights.