Filter for a portable industrial air filtration device

A filter comprising:

• a body including filter media and a rigidized material, the filter media attached to the rigidized material, the body having opposing upper and lower edges and opposing side edges, wherein the side edges are directly attached to one another to form a single seam substantially aligned with a longitudinal axis of the body, the rigidized material forms an interior surface of the body and the filter media forms an exterior surface of the body, wherein an upper portion of the rigidized material is disposed between a first portion of the filter media and a second portion of the filter media, and wherein the first portion of the filter media, the upper portion of the rigidized material, and the second portion of the filter media are attached via stitching;
• and
• a limit switch actuator including a head attached to one of:
• (a) the interior surface of the body, and (b) the exterior surface of the body, and an actuator connected to and extending from the head, wherein the limit switch actuator is attached to the body such that the head contacts an interior surface of the body and the actuator extends below the lower edge of the body.

A filter comprising:

• a body including filter media and a rigidized material, the filter media attached to the rigidized material, the body having opposing upper and lower edges, wherein:
• (a) an upper portion of the rigidized material is disposed between a first portion of the filter media and a second portion of the filter media, and the first portion of the filter media, the upper portion of the rigidized material, and the second portion of the filter media are attached via stitching;
• (b) a lower portion of the rigidized material is disposed between a third portion of the filter media and a fourth portion of the filter media, and the third portion of the filter media, the lower portion of the rigidized material, and the fourth portion of the filter media are attached via stitching;
• and
• (c) the third portion of the filter media is connected to the fourth portion of the filter media;
• and
• a limit switch actuator including a head and an actuator connected to and extending from the head, wherein the head is disposed between the third portion of the filter media and the fourth portion of the filter media and the actuator extends through the filter media proximate the lower edge of the body.