Clarcor Air Filtration Products offers the Model 2000-P and 4000-P plastic, three-piece filter housing holding frames for swine buildings. Perry Hartmann, Clarcor sales manager, demonstrated how the compact filter housing encloses two, 24 x 24-in. and two, 20 x 24-in. single header filters. The filter housing box is designed for ceiling inlets.

“The lighter weight of the plastic, when compared to metal legacy designs, reduces shipping costs and simplifies handling and installation,” Hartmann said. “The solid-bottom design improves air flow by reducing back pressure when compared to an open-bottom design.”

A unique fastening system on the filters requires no loose clips for pre- and final-filter installation. Hartmann explained that the polyester filter does not absorb water.

Inexpensive pre-filters, similar to furnace filters, help protect the internal, main filters from dust and damage. Marcia Shannon asked how often the filters need to be changed.

“Some have been in buildings for around five years,” Hartmann answered, “But the product is new, so I don’t know the endpoint yet. I would suggest changing the pre-filters yearly and the other filters every three to five years, depending upon the amount of dust on the filters.”

The cost of a four-filter housing box is $250, plus $5 per pre-filter, and $130 per internal filter. Hartmann said the total cost for installation would be $150 to $250 per sow because the company makes certain the air filtration system is installed correctly.

 “We need to install a door on the gable end, in addition to installing walkways in the attic of the building and maintaining the filter system,” he explained. Contractors also seal up the interior of the building to make sure there are no air leaks or unfiltered air getting into the building.

Leon Sheets pointed out that porcine reproductive and respiratory syndrome (PRRS) is an issue of great concern to the pork industry, which makes this product worthy of consideration. “There are always risks, but the chances of breaking with PRRS are reduced when using filters.” Paul Yeske, DVM, said, “I like that the filter box has a sealed bottom, meaning less chance to leak. The ease of putting it together and the lighter weight seem to be good features.”

“This product seems to be well thought out,” Ted Funk added. “The value in considering this product is that PRRS is a complicated issue. Of course, the whole barn and production system has to be considered when dealing with this issue, but this product could be part of a PRRS prevention system.”

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