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1.0 General
1.1 High Temperature pleated filters shall be Pre
Pleat HT as manufactured by Flanders.
1.2 Filter sizes and capacities shall be scheduled on
the drawings.
1.3 Filters shall be UL Class 1 listed and be able to
operate up to 400 degrees Fahrenheit.
2.0 Filter Construction
2.1 Filter media shall be manufactured of a high loft-
ed micro-fine media with a minimum efficiency of
50% per ASHRAE Standard 52.1
2.2 An expanded metal wire grid shall be bonded to
the media to maintain pleat integrity.
2.3 The filter pack shall be enclosed within a corro-
sion-resistant frame and furnished with an
expanded metal facescreen on the downstream,
air leaving side.
3.0 Performance
3.1 Initial and final resistance shall not exceed the
final values.
3.2 Media efficiency and content must meet or
exceed the ratings of the specified filter.
3.3 The manufacturer shall guarantee performance
as stated in the literature within tolerances as out-
lined in Section 7.4 of ARI Standard 850.
Guide Specifications
Resistance (Inches w.g.)
0.25
0.75
0.50
1.00
1.50
1.25
0
Air Flow - CFM
0 1000 1500 2000 2500
Rate of Air Flow vs Initial Resistance
Arrestance vs. Dust Fed
Arrestance (%)
Dust Fed (grams)
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
25 40 55 70 85 100
Resistance (Inches w.g.)
0.25
0.75
0.50
1.00
1.50
1.25
0
Air Flow - CFM
0 1000 1500 2000 2500
Rate of Air Flow vs Initial Resistance
Resistance vs. Dust Fed
Resistance (Inches w.g.)
Dust Fed (grams)
0 10 20 30 40 50 60 70 80 90 100
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
Flanders - Foremost in Air Filtration
Corporate Headquarters, St. Petersburg, FL
Performance values stated may be averages typical of the products listed.
Contact factory for actual performance test reports on specific products.
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