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> S P E C I F I C A T I O N S F O R C U B E F I L T E R S

G l a s f l o s s S t a n d a r d , I n t e r n a l S u p p o r t e d a n d U n i t i z e d C u b e s s h a l l b e m a d e f r o m
1 0 0 % n o n - w o v e n p o l y e s t e r f i b e r s . T h e u n i f o r m f i b e r o r i e n t a t i o n a n d g r a d u a t e d
d e n s i t y l e n d s i t s e l f t o g r e a t e r d e p t h l o a d i n g a n d h i g h e r a r r e s t a n c e . T h e a i r e n t e r i n g
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s i d e s h a l l b e a h i g h l y l o f t e d , c o a r s e f ib r , d e s i g n e d t o f a c i l i t a t e t h e d e p t h l o a d i n g
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o f d i r t p a r t i c l e s , t h u s a c t in a s a n in e g r a l p r e f i l t e r f o r t h e m o r e d e n s e s e c o n d s ta e
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T h e a ir e a v i n g s id s h a l l i n c o r p o r a t e a s k i n b a c k i n g . G l a s fl s C u b e s s h a l l b e
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g r e e n a n d w h i t e i n c o l o r , w h i t e b e i n g t h e a i r e n t r y s i d e . T h e r e s h a l l b e a s k i n b a c k -
i zd
i n g o n t h e a i r l e a v i n g s i d e . I n t e r n a l S u p p o r t e d a n d U n it e C u b e s a r e c o n s t r u c t e d
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u s i n g a h e a v y g a u g e w ir s u p p o r t f r a m e . T h e m e d i a b l a n k e t c o m p l e t e l y e n c l o s e s
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t h e p e r im e t e r w i r e a n d o ff r s a s e l f- eli , s e lf upr t in f l t e r . S t a n d a r d , I n t e r n a l
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S u p p o r t e d a n d U n i t iz d C u b e s a r e e n g i n e e r e d f o r u s e in e m p e r a t u r e s u p t o 2 5 0
d e g r e e s F a h r e n h e i t ( 1 2 1 d e g r e e s C e l s i u s ) . G la f l s C u b e s a c h i e v e a M E R V 7
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r a t i n g w h e n t e s t e d in cod a n c e w i t h t h e A N S I / A S H R A E 5 2 . 2 T e s t S t a n d a r d .
RESISTANCE IN. W.G. 0.5 REMOVAL PERCENTAGE 100
STANDARD PRESSURE DROP
MINIMUM PARTICLE SIZE EFFICIENCY
Test Filter Size 24" x 24" Nominal
Test Filter Size 24" x 24" Nominal
0.4
80
0.3
60
0.2
40
0.1
20
0
1
450
250
300350
400
10
AIR FLOW RATE, (FPM) 500 0 .1 PARTICLE SIZE, MICRONS
QUAD 440
QUAD 440 QUAD 420 MINIMUM PARTICLE SIZE EFFICIENCY
QUAD 420
RESISTANCE IN. W.G. 0.4 REMOVAL PERCENTAGE 100
STANDARD PRESSURE DROP
Test Filter Size 24" x 24" Nominal
Test Filter Size 24" x 24" Nominal
0.5
80
0.3
60
0.2
40
0.1
20
0
450
250
300350
400
1
10
AIR FLOW RATE, (FPM) 500 0 .1 PARTICLE SIZE, MICRONS
STANDARD CUBE UNITIZED CUBE CUBES
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