W-Pre Disposable Pleated Air Filter

The media is a special blended of nonwoven cotton and synthetic fibers which is connected with metal support grid to offer high dust holding capacity and efficiency.  The W pattern radial wedge pleat ensures that the greatest media is exposed to the air flow to promote uniform dust loading.
The thickness is available in 1”, 2” and 4”.  Per ASHRAE 52.1-1992 standard, the filters have an average atmospheric dust spot efficiency range 30-35% (in NBS Test Method; per ASHRAE 52.2, the efficiency is MERV8) and an average arrestance of 90-94% (in AFI test method).
The frame is available for Paper (Card Board) and Metal Frame.

Features:
W-PRE radial wedge pleat is with the greatest media area exposed to the air flow which can contribute filter’s dust collection capacity.  They are available in 1”,2”and 4”nominal thicknesses.
W-Pre Disposable Pleated Air Filters are available in a wide range of sizes; and with slight or without any system modification, is able to fit most commercial and industrial installations. 
Only need to use gaskets and fasteners to adapt W-PRE filter to existing filter bands.
These filters are also suitable for variable air volume system. Operating face velocity range is from 0 to 500FPM for1”and 2” thickness filters, and 0 to 625 FPM for 4” thickness filters.

Efficiency:
Per ASHRAE 52.1-1992 standard, the filters have an average atmospheric dust spot efficiency range 30-35% (in NBS Test Method; per ASHRAE 52.2, the efficiency is MERV8) and an average arrestance of 90-94% (in AFI test method).

Media:
W-PRE filter media is a special blend of nonwoven cotton and synthetic fibers offering high dust-holding capacity and high efficiency.

Media Support Grid:
Expanded painted metal provides a flat, stable surface that allows 100% media to metal adhesion. This eliminates media damage caused by overlapping wire grids that cannot be 100% attached. Expanded painted metals give a better corrosion resistance than others.

Outer Frame:
Outer frame can be also a wide range of metal selection which is including of Paper, Galvanized Steel, Aluminum and Stainless Steel. The paper frame is constructed of high wet strength, moisture-resistant beverage board. Two mating die-cut boxes are bonded together, forming a double wall around the entire filter. Diagonal supports are designed for maximum open area while providing excellent structural stability in heavy dirt loading.

Pre Filter Performance Data

Material and Service Gonditions