Gravely and Ariens Zero Turn Mower Mulch Kit (79105900) for 60 Deck. Fits Deck Size: 60 inches. Gravely: 988174, 991156, 991166, 991217, 991220, 992267, 992269, 992272, 992274, 992275, 992278, 992280, 992281, 992283. Ariens: 991130, 991133, 991136. Mulching Efficiency: The baffles create separate cutting chambers for each blade, ensuring grass is finely chopped and evenly distributed. Multiple Grass Cuts: The design allows grass to lift into each chamber, getting cut multiple times for a clean, professional-looking lawn. Easy Installation: Simple to mount under mower decks without extensive modifications. Reduces grass clumping and creates a cleaner finish. Enhances soil health by finely distributing mulch back onto the lawn. Saves time by eliminating the need to bag clippings.