The ELECTRA SILVER 9400 is designed to provide the highest arrestance available for the majority of Furnaces and Air Conditioners. The 0.12 inch W.G. initial resistance of the Electra Silver 9400 will perform best in systems configured with 1 square foot, or more, of filter area for each ton of air conditioning. Two layers of woven monofilament Polypropylene with integral anti-microbial material provide 10 times more filtration than a disposable fiber-glass filter. The Deep loading center layer of non-woven polyester allows the Electra Silver 9400 to prolong the time between washings.
The ELECTRA GOLD provides over 94% Arrestance in a premium quality Extruded Aluminum, Gold Anodized frame with a durable and attractive finish. At the heart of this filter are three layers of high arrestance material sandwiched between 2 layers of expanded steel. A special Impregnated black Polypropylene has an EPA registered anti-microbial material to inhibit mold and bacteria growth while the center non-woven layer retains debris in a maze of fibers designed to maximize air flow even when soiled. Rated by independent Testing laboratory at over 94% peak arrestance, this filter has 10 times the arrestance of a disposable fiberglass filter.