Multiple layers of expanded Galvanized Steel, enclosed in a medium weight Galvanized Steel frame. Designed as a less expensive option for air applications such as make up air roof top units in industrial, commercial, restaurants, schools, and office buildings where a washable filter is recommended. They can also be used as pre filters, which would remove large particles that easily clog a filter. Pre filters keep the main filter lasting longer and the unit running more smoothly.

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CONSTRUCTION: The Perm A Steel Filter is a lightweight galvanized filter. It consists of multiple layers of galvanized expanded material, expanded through specific feeds to assure maximum filtering and internal loading capabilities. The media is enclosed in a lightweight galvanized frame, mitered and secured at one corner by rivets. The filter is designed for applications such as light industrial, commercial, restaurants, schools, and office buildings where a lightweight permanent filter is recommended. Maximum temperature range on the Perm A Steel Filter is 425 degrees F. Available in both stock and special sizes. Available in 3” and 4” thicknesses.

 

MATERIAL: Filtering element shall be processed from sheet steel commercially known as hot dip galvanize, no less than .0157 in thickness expanded through no less than .020 feed. Frame shall be made from hot dip galvanize steel.

Note: All Smith Permanent stock sizes are 1/2″ under on width and height, 1/8″ under on thickness.

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PERM-A-STEEL FILTER STOCK SIZES

STOCK SIZE
(Actual Size
1/2″ under)
STOCK
#
Pack Ctn/
Lbs. Ctn
16 x 20 x 1PS16201N12
/42 lbs.
16 x 25 x 1PS16251N12
/54 lbs.
20 x 20 x 1PS20201N12
/54 lbs.
20 x 25 x 1PS20251N12
/64 lbs.
24 x 24 x 1PS24241N12
/73 lbs.
10 x 20 x 2PS10202N12
/33 lbs.
12 x 24 x 2PS12242N12
/46 lbs.
16 x 20 x 2PS16202N12
/51 lbs.
16 x 25 x 2PS16252N12
/59 lbs.
20 x 20 x 2PS20202N12
/59 lbs.
20 x 25 x 2PS20252N12
/70 lbs.
24 x 24 x 2PS24242N12
/81 lbs.

Net Face Velocity F.P.M.Resistance in Inches of W.G. nominal thicknessC.F.M. Capacity by Size
1 Inch2 Inch10×2016×2016×2520×2020×2524×24
2670.0300.025282467597600768897
3560.0510.04037662379680010241197
4450.0800.069469779995100012791496
5330.1250.0915629331192120015321791
6220.1800.14365610891391140017882091
7110.2310.18875012441590160020442390
8000.29284414001789180023002689
8890.37093815561988200025562988
978103217122187220028123287

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