Cylindrical Filtration Apparatus Assembly

1 . A filtration apparatus assembly having a holding frame with a number of square holding frame apertures, the filtration apparatus assembly comprising:

a cylindrical filter; and

a mounting frame;

the mounting frame comprising a mounting frame aperture sized for the cylindrical filter and a mounting frame flange sized for the square holding frame apertures.

2 . The filtration apparatus assembly of claim 1 , wherein the cylindrical filter comprises a cylindrical pulse cartridge filter.

3 . The filtration apparatus assembly of claim 1 , wherein the cylindrical filter comprises a filter media therein.

4 . The filtration apparatus assembly of claim 3 , wherein the filter media comprises cellulose, blends of cellulose and polyester, glass microfiber, blends of glass microfiber and synthetic fibers, and/or composites.

5 . The filtration apparatus assembly of claim 3 , wherein the filter media comprises a plurality of pleats.

6 . The filtration apparatus assembly of claim 1 , wherein the cylindrical filter comprises a central passageway therein.

7 . The filtration apparatus assembly of claim 1 , wherein the mounting frame comprises a substantial trapezoid-like shape.

8 . The filtration apparatus assembly of claim 1 , wherein the mounting frame extends from a wide end about the mounting flange to a narrow end about the mounting frame aperture.

9 . The filtration apparatus assembly of claim 1 , wherein the mounting flange comprises a substantial square-like shape.

10 . The filtration apparatus assembly of claim 1 , wherein the cylindrical filter comprises an end cap.

11 . The filtration apparatus assembly of claim 1 , wherein the cylindrical filter comprises a two stage cylindrical filter.

12 . The filtration apparatus assembly of claim 11 , wherein the two stage cylindrical filter comprises a first stage within the mounting frame and a second stage downstream of the mounting frame.

13 . The filtration apparatus assembly of claim 12 , wherein the first stage comprises a first end cap and wherein the second stage comprises a second end cap.

14 . The filtration apparatus assembly of claim 1 , wherein the cylindrical filter comprises a substantially non-square type geometry including a cone, an oval, an ellipse, or any type of quadric surface.

15 . A method of retrofitting a filtration apparatus assembly, comprising:

removing a plurality of mini-pleat filters from square holding frame apertures within a holding frame;

installing a plurality of mounting frames having a trapezoid-like shape within the square holding frame apertures; and

positioning a cylindrical filter within each of the plurality of mounting frames having the trapezoid-like shape.

16 . A filtration apparatus, comprising:

a cylindrical filter; and

a trapezoid-like mounting frame;

the mounting frame comprising a mounting frame aperture sized for the cylindrical filter and a mounting frame flange sized for a square holding frame aperture.

17 . The filtration apparatus of claim 16 , wherein the cylindrical filter comprises a cylindrical pulse cartridge filter.

18 . The filtration apparatus of claim 16 , wherein the cylindrical filter comprises a plurality of pleats.

19 . The filtration apparatus of claim 16 , wherein the mounting frame extends from a wide end about the mounting flange to a narrow end about the mounting frame aperture.

20 . The filtration apparatus of claim 16 , wherein the cylindrical filter comprises a two stage cylindrical filter.