Exmark MK726 Mulch KitExmark MK726 Mulch Kit The aerodynamically designed deck, baffles and special mulching blades create airflow patterns that circulate leaves and grass for repeated cuttings and even dispersal deep into the turf. The simple bolt in mulching baffles create independent mulching chambers which reduces the transfer of material from one mulching blade to another thereby improving the distribution of mulched clippings or leaves.