The AYP 187209 is a genuine 22-inch mulching blade, specifically designed for 42-inch mower decks. This high-quality blade measures 558.8 mm (22 inches) in length, 57.15 mm (2.25 inches) in width, and 3.81 mm (0.150 inches) in thickness. It features a precise 5-point star center hole, ensuring a secure fit and optimal mulching performance across various AYP, Husqvarna, Craftsman, and Poulan models that utilize a 42-inch cutting deck. This durable blade provides excellent cutting and mulching capabilities for a well-maintained lawn.