Document 7Opox1MpLw5VoQ5RbOBKO71wR

Air System Equipment Air Filters and CJeaner8 Blocksom and Company Michigan City, Ind. AXIOM PARATEX KEEPING PACE WITH MODERN AIR CONDITIONING The Axiom and the Paratex Air Filters Offer All Necessary Advantages The Following Facts Prove This Statement The Axiom Air Filter A throw-away type The Paratex Air Filter A Permanent type CHECK THESE FEATURES Light Weight (Av. 2 lbs) Easy to Change Flameproofed Treated with Deodorizer Repels Bacteria Large Dust Capacity Low Initial Cost Low Upkeep 95.6% Efficient Light Weight (Av. 1 lbs) Easy to Install v Treated with Deodorizer Repels Bacteria Large Dust Capacity Easy to Clean High Efficiency Permanent Low Cost . Composed of three types of tightly curled cactus fibre on intake side, hair on exit side, thus impinging all kinds of dirt, dust, pollen and bacteria. The Axiom Air Filter is really flameproofed, receiving two flame proofing treats ments. In a test made by national authori ties of the six leading air filters, the Axiom Air Filter led by a wide margin, having an overall efficiency of 95.6 per cent. This is very important as it insures the top perfor mance of the heating and air conditioning equipment. With all these extra features it is still lower in cost. Composed of tightly curled hair. Dipped in Latex rubber to serve as a binder. Cannot dent, chip, rust; available in any size, shape, thickness or density. Clean by simply rinsing in water or spraying with a hose. It is practically impossible to damage the Paratex Air Filter even with careless handling. Does not need the expense or mess of a special spraying of oil at any time. The fine tightly curled hair does an efficient, thorough job of cleaning the air. Due to resilient construction it offers perfect seal at all times. Very reasonable in price. You owe it to the performance of your equipment to investigate these two air filters. A great many of the nation's leading manufacturers are users of AXIOM AND PARATEX AIR FILTERS. Over fifteen year's experience in the air conditioning field. Let our Research and Engineering Department serve you. 866 Air System Equipment Air Filters and Cleaners Coppus Engineering Corporation 339 Park Avenue, Worcester Mass. MANUFACTURERS OF AIR FILTERS, STEAM TURBINES, GAS BURNERS, FORCED DRAFT BLOWERS, COOLING FANS "COPPUS AIR FILTERS PASS CLEAN AIR" The Coppus Unit Air Filter (patent No. 2050508 and other patents pending) is of the dry type using as filter material allwool felt. It consists of a distender frame (C, Fig- 2), a filter "glove" (, Figs. 1 and 2) and a retainer grid (B, Fig. 1). The edges of the retainer grid form a reenforced sheet metal box (A, Fig. 1) for protection of the filter element. The edges of the filter glove are reen forced on all four sides assuring an air tight seal against by-passing of dirty air. By tightening the wing studs which hold the distender frame and the retainer grid together, the filter glove is stretched and held tautly inside of the filter box, giving the pockets a tapered shape so essential for an even air flow. This design has the advantage of pro viding an effective filter area entirely unobstructed by wire or screen supports. Cut, Fig. 3 shows the tapered filter pockets on the clean air side. The filter glove can be readily replaced without removing the unit filter from the installation. No aux iliary frames for insertion of the filter cells are required as the completely assembled unit filters can be bolted together to a filter bank of any desired size. All metallic parts are rust-proofed and Duco Painted. Specifications Normal Rating: 800 cfm. Resistance when clean: 0.2 in. W.G. Dust Arrestance (cleaning efficiency): 99.61 per cent (Tested in accordance with A.S.H.V.E. Standard Code for Testing and Rating Air Cleaning Devices Used in General Ventilation Work). Dimensions: 20 by 20 in. by 5% in. Weight per unit: 25 lb. ANOTHER COPPUS BLUE RIBBON PRODUCT Outstanding Advantages 1. It has an exceptionally high dust arrestance. 2. It maintains a high dust arrestance even under diverse conditions of neglect. 3. Its operation is not impaired by atmospheric conditions. 4. It is a Medium Air Resistance Type (Class C) according to the A.S.H.V.E. Code for Air Cleaning Devices. 5. It is easily and quickly cleaned without removing the filter element. 6. Its cost of upkeep is very low because the permanent filter element is reconditioned periodically with a vacuum cleaner. 7. It combines scientific knowledge and practical engineering methods with highest quality of material and workmanship. Write for Complete Bulletins 867 Cleaning Filter Elements with Portable Vacuum Cleaner