Specifications include, but are not limited to: Dryer exhaust duct cleaning service for all housing units. 1 Dryer Vent Spinning Rotary System. Due to safety concerns, a cordless drill should power the system. 2 High Pressure Air Agitation Tools. 175 PSI of constant air pressure with forward and reverse blow tools for various sizes and lengths. 3 High Pressure HEPA Filtration Vacuum System. Has the ability to clean all tubing stacks and vents, including squirrel fans, from beginning to the end. Has the ability to clean between floors and up to 80 feet. System has the ability to move 5000 CFM of air. List make and model of system. HEPA filtration system has ability to remove 99.97% of airborne contaminants and 0.3 microns. Must have the ability to collect and contain effluent to prevent release within the building envelope.