Addition and/or Alterations - EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES - For the installation of New Ductwork, Registers/Grilles/Diffusers, and Warm-Air Appliances as per attached standards. Deviations from these standards require submission of construction and site plans. MULTI FAMILY - EACH HVAC UNIT TO BE SELF-CONTAINED WITHIN EACH DWELLING UNIT. NO PENETRATIONS OF RATED ASSEMBLIES. 1st & 2nd floors - 72K BTU furnace, 2.5 ton AC, ductwork, and (8) diffusers. 3rd floor - 57K BTU, 1.5 ton electric heat pump, ductwork, and 5 diffusers Total 13 Registers.