Box filter with orientation device

摘要

A panel filter including a generally rectangular border frame having four sides; a filter media supported by the border frame and extending within the border frame; and a key formed into the border frame is provided. The key is used to properly determine if the filter is appropriate for mounting in a housing. It may also be used for properly orienting the filter within the housing. A system including the housing is also provided. Methods of providing biosecurity for animal confinements are also provided.

主权项

1. A panel filter comprising:
a generally rectangular border frame having four sides; a filter media supported by the border frame and extending within the border frame; a key formed into the border frame, the key comprises a first recessed corner formed at a juncture between a first pair of the sides; and wherein at least one juncture between a different pair of sides than said first pair is a non-recessed corner, and wherein the generally rectangular border is square, wherein the combination of the recessed corner and the non-recessed corner provides orientation means for orienting the panel filter to provide a predetermined orientation for the filter media when in use.