Sundance Pressure Cleaning provides and installs hinge kits that attach to fans on the roof. This is required by NFPA 96 to ensure the fan can be lifted and tipped securely for proper cleaning of the fan blades and the ducts beneath the fan area. Hinge kits are required by the NFPA 96 for all upblast fans and greatly reduce the deterioration to fan motors, housing, and electrical wiring that can occur during the cleaning process.