4 inch Rodent Guards
Bought 2 of these well built guards for my new basement gravity drain pipes, one into basement basin, other at outside basement wall 7 1/2 foot below ground level ran 120 foot to creek. Lots of relief not to have to worry about an electric sump pump, and now no critters coming in from the creek. Have a 2-3 degree slope from basement to creek. Been lowering the water table for 2 weeks now. Like to walk out and see the trickle from the basement drain ! Basement never been drier !
Quality will last as long as the dual wall poly pipe!
