Perm A Steel

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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Overview

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.

Filter Sizes

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

For Custom Sizes Please Request A Quote

PERM-A-STEEL FILTER STOCK SIZES

STOCK SIZE
(Actual Size
1/2″ under)		 STOCK
#		 Pack Ctn/
Lbs. Ctn
16 x 20 x 1 PS16201N 12
/42 lbs.
16 x 25 x 1 PS16251N 12
/54 lbs.
20 x 20 x 1 PS20201N 12
/54 lbs.
20 x 25 x 1 PS20251N 12
/64 lbs.
24 x 24 x 1 PS24241N 12
/73 lbs.
10 x 20 x 2 PS10202N 12
/33 lbs.
12 x 24 x 2 PS12242N 12
/46 lbs.
16 x 20 x 2 PS16202N 12
/51 lbs.
16 x 25 x 2 PS16252N 12
/59 lbs.
20 x 20 x 2 PS20202N 12
/59 lbs.
20 x 25 x 2 PS20252N 12
/70 lbs.
24 x 24 x 2 PS24242N 12
/81 lbs.

Air Delivery Data Chart

Net Face Velocity F.P.M. Resistance in Inches of W.G. nominal thickness C.F.M. Capacity by Size
1 Inch 2 Inch 10×20 16×20 16×25 20×20 20×25 24×24
267 0.030 0.025 282 467 597 600 768 897
356 0.051 0.040 376 623 796 800 1024 1197
445 0.080 0.069 469 779 995 1000 1279 1496
533 0.125 0.091 562 933 1192 1200 1532 1791
622 0.180 0.143 656 1089 1391 1400 1788 2091
711 0.231 0.188 750 1244 1590 1600 2044 2390
800 0.292 844 1400 1789 1800 2300 2689
889 0.370 938 1556 1988 2000 2556 2988
978 1032 1712 2187 2200 2812 3287

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