MRCOOL MSHDK3660 Signature Down Flow Kit (MSHDK3660)MRCOOL MSHDK3660 Mrcool MSHDK3660 3 to 5 Ton Downflow Kit for MrCool Signature Split System Air Handler Intended for air handler sizes 1. 5, 2, and 2. 5 tons. One insulated drain pan. Two insulated downflow coil support brackets. Iwo insulated inner drain pan drip shields. Two non insulated outer coil slab shields. Two front and rear insulated air seal plates. Tapping screws for downflow coil support brackets. Two 16 ft pre cut insulating foam tape