Base-Drain, Basement Waterproofing Drainage Channel System
ABS Base-Drain Telescopic Inspection Port (aka clean out)
These allow the homeowner or service engineer to look inside the channel, to test the sytem or flush it out with a hose pipe.
The height of the port can be adjusted during the installation to match the level of the floor.
without this adjustment, fixed height ports usually end up being a little bit proud of or shallower than the floor surface.
The lid is attached by a hinge so it is less likely to become lost or damaged.
The opening is a full 75mm (3")