TROX

AIR FILTRATION APPARATUS COMPRISING CONTINUOUS BANDS OF FILTRATION MEDIUM WOUND ON CASSETTE ROLLS, STRUCTURAL FRAMEWORK FOR SUPPORTING THE CASSETTES, TRANSPORTING MECHANISM FOR SLOWLY DRIVING THE FILTRATION MEDIUM FROM ONE CASSETTE TO ANOTHER WHILE AIR IS PASSED THROUGH THE MEDIUM, AND CONTROLS THEREFOR

ACCESSORIES FOR AIR CONDITIONING SYSTEMS, COMPRISING HEATING AND COOLING UNITS, BLOWERS, DUCT WORK, REGISTERS AND LOUVERS