Main Street Mower | Hi-Flow Blade | 18 Inch | 15/16 Hole | Z Master / GrandStand HDM | 36" & 52" Deck | 52-15-180-H

The Main Street Mower 52-15-180-H is a High-Lift (Hi-Lift / High-Flow) mower blade engineered directly to match the specs of Toro 140-1242. Built for 52-inch commercial decks, its aggressive high-sail profile creates high airflow beneath the deck, lifting grass upright for a precision cut and clean discharge, bagging, or dispersion. Specifications & Key Details Blade Style: Commercial High-Lift / High-Flow Length: 18 inches Width: 2.5 inches (2 1/2") Center Hole: 0.9375 inches (15/16") Thickness: 0.2040 inches (0.204"heavy-dutysteel) Deck Requirement: 2 blades for a 36" deck & 3 blades for a 52" cutting deck. 36" Decks: Use 2 blades 18" = 36" total cutting width. 52" Decks: Use 3 blades 18" = 54" total width (with a slight overlap inside a 52" deck shell) OEM & Cross-Reference Compatibility Toro OEM Parts: 140-1242 (Supersedes previous Toro part # 137-9837) Aftermarket Cross-References: Rotary 15-16717 Machine Fit & Compatibility Designed for Toro commercial mowers equipped with 52-inch TURBO FORCE® decks, including: Toro GrandStand® stand-on mowers (52" Decks) Toro Z Master® Professional Series zero-turn mowers (3000, 4000, 5000, and 6000 series with 52" decks) Part Decoding (52-15-180-H): 52 = Designed for 52" Commercial Decks (also fits 36" Decks) 15 = 15/16" Center Hole 180 = 18.0" Blade Length H = High-Flow / High-Lift Commercial Contour