Marshall Stamping 30 in. H x 37 in. W Galvanized Steel Area Wall Ear Plugs Abrasion resistant outer layer

Abrasion resistant outer layer

Kit includes: Pin nailer

Sealed spring cage with stainless steel cage screws

Built-in check valve

Severe electrical shock could result 5) Do not use for drinking water

Marshall Stamping 30 in. H x 37 in. W Galvanized Steel Area Wall Ear Plugs Abrasion resistant outer layerRolled top on all standard area walls 12, 18, 24, and foundation vent area walls have rounded top and bottom corners for extra safety Stamped from single steel sheet Bright finish reflects light into basement Holes in flanges for bolting to wall Deep corrugation stiffens against back fill Minimum G 60 galvanized coating All back filling should be done gradually to prevent excessive pressure against area wall