The Premium Series L-screen is the optimal L-screen for baseball practice. Make sure your coaches and athletes are safe during practice or pregame warmups. This L-Screen has a 3' X 3' cutout, which offers more pitcher protection than the traditional 3.5' X 3.5'. Excellent for hitting and pitching drill protection. These protective field screens are made of 1 5/8", galvanized and powder-coated green. The protective nets are #36 Twisted, Knotted Nylon, including a rope border and are hand sewn at every mesh - The L-screen nets are a commercial grade product.