Engineering Bulletin

ManualsBrandsHart & Cooley ManualsFloor Registers & Grilles20" x 20" (Wall Opening Size) White Steel Fixed-Bar Filter Grille (96AFBTI Series)

Engineering Data

151

REN4 (Page 89)

Note: The use of a balancing hood is recommended to balance the system. NC is based on 10 db room

attenuation (Re: 10 -

watts) ASHRAE 36-72. X=less than 20. Terminal velocity of 75 fpm.

Neck Velocity 180 220 300 350 400 450 500 580 650 700

6" Dia. cfm 35 45 60 70 80 90 100 115 130 135

Ak .43 Ps .002 .003 .004 .006 .008 .010 .012 .015 .020 .022

NC xxxxxx20222630

Throw 3 3.5 4.5 5.5 6.5 7.5 8 9 11 11

8" Dia. cfm 65 75 105 120 140 155 175 200 225 245

Ak .53 Ps .002 .003 .006 .008 .010 .013 .016 .021 .027 .032

NC xxxxx2225303538

Throw 4 5 6 7 8.5 9.5 11 12 13 15

10" Dia. cfm 100 120 165 190 220 245 275 315 355 380

Ak .62 Ps .003 .005 .009 .011 .015 .019 .024 .031 .040 .045

NC xxxx202327333539

Throw 4 5.5 7 8 9.5 11 12 13 15 16

12" Dia. cfm 140 175 235 275 315 355 39/5 455 510 550

Ak .70 Ps .005 .007 .013 .018 .023 .029 .036 .048 .061 .071

NC xxxx212427333640

Throw 4.5 5.5 7 8 10 11 12 14 15 17

14" Dia. cfm 190 235 320 375 430 480 535 620 695 750

Ak .75 Ps .007 .011 .020 .027 .036 .044 .055 .074 .094 .107

NC xxxx202428323540

Throw 4.5 5.5 7 8.5 10 11 12 14 16 17

700

1695

.020

3540

.018

1825

.084

3815

.081

1400

.019

3080

.018

1520

.080

3340

.078

Type & Size

RE5T/RE5TI

22 X 22

Ak 2.42

46 x 22

Ak 5.06

RH45T

22 x 22

Ak 2.61

46 x 22

Ak 5.46

REF5T*

20 X 20

Ak 2.00

44 x 20

Ak 4.40

RHF45T*

20 X 20

Ak 2.17

44 x 20

Ak 4.77

800

1935

.025

4050

.024

2090

.120

4360

.116

1600

.024

3520

.024

173 5

.105

3815

.103

500

1210

.010

2530

.010

1305

.043

2725

.040

1000

.010

2200

.009

1085

.040

2385

.039

400

970

.006

2024

.006

1045

.030

2180

.030

800

.006

1760

.006

870

.025

1910

.024

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

300

725

.004

1520

.003

785

.015

1635

.015

600

.003

1320

.003

650

.015

1430

.015

T-Bar Return Air Grilles & Filter Grilles

(Page 85-88)

1000

2420

.040

5060

.036

2610

.170

5450

.165

2000

.037

4400

.036

2170

.152

4770

.148

600

1450

.014

3035

.012

1565

.062

3270

.059

1200

.014

2640

.013

1300

.060

2860

.058

900

2180

.031

4550

.029

2350

.140

4905

.136

1800

.030

3960

.030

1955

.135

4295

.132

* Tested without filters. Typical disposable 1 inch filter capacity is 2 CFM per square inch of gross filter area.

Recommended velocity is 300-400 FPM. Velocities higher than 500 FPM will decrease filter performance, increase

flow resistance, and possibly blow off agglomerates of collected dirt. Velocity measured 1" from face.

Average Face Velocity FPM

Neck Velocity 250 350 450 550 650 750 850 1000 1200

6" Dia. cfm 50 70 90 110 130 145 165 195 235

Ps .004 .009 .014 .021 .029 .036 .046 .065 .094

NC xxxxxxx x x

Ak .43 444 Throw 3 3.5 4.5 6 7.5 8 9 11 12

Ak .43 *443Trrow 3/4 3.5/5 4.5/6.5 6/8 7.5/10 8/11 9/13 11/15 12/17

Ak .43 44 Throw 4 5 6.5 8 10 11 13 15 17

8" Dia. cfm 85 120 155 190 225 260 295 350 420

Ps .006 .012 .019 .029 .040 .054 .070 .098 .140

NC x x x x 21 26 31 34 37

Ak .53 444 Throw 4 5 6.5 8 9.5 11 13 15 17

Ak .53 *443 Trrow 4/5.5 5/7 6.5/9 8/11 95./14 11/16 13/19 15/21 17/23

Ak .53 442 Throw 5.5 7 9 11 14 16 19 21 23

10" Dia. cfm 135 190 245 300 355 410 465 545 655

Ps .009 .017 .028 .043 .069 .078 .102 .140 .205

NC x x x 22 29 35 38 42 46

Ak .62 444 Throw 4 6 8 10 12 13 15 18 19

Ak .62 *443 Trrow 4/6 6/8 8/11 10/14 12/17 13/19 15/21 18/25 19/26

Ak .62 442 Throw 6 8 11 14 17 19 21 25 26

12" Dia. cfm 190 245 355 450 530 590 670 785 940

Ps .012 .024 .040 .059 .082 .110 .142 .195 .275

NC x x 22 28 35 39 44 47 52

Ak .70 444 Throw 5 7.5 10 11.5 14 16 18 19 20

Ak .70 *443 Trrow 5/8.5 7.5/11 10/14 11.5/17 14/19 16/23 18/25 19/26 20/27

Ak .70 442 Throw 8.5 11 14 17 19 23 25 26 27

14" Dia. cfm 285 375 480 590 695 800 910 1070 1285

Ps .015 .031 .050 .075 .105 .137 .177 .245 .350

NC x 21 27 31 36 40 45 48 53

Ak .75 444 Throw 6 9 11 14 17 19 20 22 24

Ak .75 *443 Trrow 6/8.5 9/13 11/16 14/20 17/24 19/26 20/27 22/28 24/29

Ak .75 442 Throw 8.5 13 16 20 24 26 27 28 29

441 & 445 (Page 89)

NOTE: The use of a balancing hood is recommended to balance the system. NC is based on 10db room

attenuation (Re: 10 -

watts) ASHRAE 36-72.Terminal velocity of 75 fpm.

Neck Velocity 250 350 450 550 650 750 850 1000 1200

6" Dia. cfm 50 70 90 110 130 145 165 195 235

Ps .004 .009 .014 .021 .029 .036 .046 .065 .094

NC x x x x x23273135

Ak .43 444 Throw 3 3.5 4.5 6 7.5 8 9 11 12

Ak .43 *443 Trrow 3/4 3.5/5 4.5/6.5 6/8 7.5/10 8/11 9/13 11/15 12/17

Ak .43 442 Throw 4 5 6.5 8 10 11 13 15 17

8" Dia. cfm 85 120 155 190 225 260 295 350 420

Ps .006 .012 .019 .029 .040 .054 .070 .098 .140

NC x x x x 21 26 31 34 37

Ak .53 444 Throw 4 5 6.5 8 9.5 11 13 15 17

Ak .53 *443 Trrow 4/5.5 5/7 6.5/9 8/11 9.5./14 11/16 13/19 15/21 17/23

Ak .53 442 Throw 5.5 7 9 11 14 16 19 21 23

10" Dia. cfm 135 190 245 300 355 410 465 545 655

Ps .009 .017 .028 .043 .069 .078 .102 .140 .205

NC x x x222935384246

Ak .62 444 Throw 4 6 8 10 12 13 15 18 19

Ak .62 *443 Trrow 4/6 6/8 8/11 10/14 12/17 13/19 15/21 18/25 19/26

Ak .62 442 Throw 6 8 11 14 17 19 21 25 26

12" Dia. cfm 190 245 355 450 530 590 670 785 940

Ps .012 .024 .040 .059 .082 .110 .142 .195 .275

NC x x 22 28 35 39 44 47 52

Ak .70 444 Throw 5 7.5 10 11.5 14 16 18 19 20

Ak .70 *443 Trrow 5/8.5 7.5/11 10/14 11.5/17 14/19 16/23 18/25 19/26 20/27

Ak .70 442 Throw 8.5 11 14 17 19 23 25 26 27

14" Dia. cfm 285 375 480 590 695 800 910 1070 1285

Ps .015 .031 .050 .075 .105 .137 .177 .245 .350

NC x 21 27 31 36 40 45 48 53

Ak .75 444 Throw 6 9 11 14 17 19 20 22 24

Ak .75 *443 Trrow 6/8.5 9/13 11/16 14/20 17/24 19/26 20/27 22/28 24/29

Ak .75 442 Throw 8.5 13 16 20 24 26 27 28 29

*443 throw S/L

442, 443 & 444 SurfAire

(Page 89)

Static Pressure (in W.C.) -0.024 -0.042 -0.065 -0.094 -0.128

Total Pressure (in W.C.) -0.018 -0.032 -0.050 -0.072 -0.098

SIZE Ak (Sq. Ft.) Face Velocity (fpm) 300 400 500 600 700

20x20 1.75 cfm 524 698 873 1048 1222

96AFBT/96AFBTI (Page 84, 85)

600

1465

.067

1645

.113

1340

.330

1355

.240

1390

.155

1535

.380

1555

.283

1580

.210

500

1220

.047

1370

.078

1115

.230

11 3 0

.165

116 0

.106

1280

.265

1295

.200

1315

.145

400

975

.030

1095

.050

890

.147

905

.105

930

.068

1025

.170

1035

.125

1050

.094

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

cfm

-Ps

300

730

.017

820

.028

670

.084

680

.060

695

.039

770

.098

775

.076

790

.055

659T/659TI/PFT/PFTI Series Performance

(Page 83, 86)

AVE. FACE VEL. FPM

659-T

Ak 2.44

PFT

Ak 2.74

659-TI

w/12" colllar

Ak 2.23

w/14" collar

Ak 2.26

w/ 16" collar

Ak 2.32

PFTI

w/12" collar

Ak 2.32

w/14" collar

Ak 2.59

w/16" collar

Ak 2.63

800

1950

.120

2190

.200

17 8 5

.590

1810

.420

1855

.275

2050

.680

2070

.510

2105

.350

700

17 10

.090

1920

.152

1560

.450

1580

.330

1625

.210

17 9 0

.520

1815

.390

1840

.285

Note: Filter grille performance limited by filter capacity rating. 2 cfm per square inch of gross filter area is typical.

Summary of content (1 pages)

PAGE 1
659T/659TI/PFT/PFTI Series Performance (Page 83, 86) AVE. FACE VEL. FPM 659-T cfm Ak 2.44 -Ps PFT cfm Ak 2.74 -Ps 659-TI w/12" colllar cfm Ak 2.23 -Ps w/14" collar cfm Ak 2.26 -Ps w/ 16" collar cfm Ak 2.32 -Ps PFTI w/12" collar cfm Ak 2.32 -Ps w/14" collar cfm Ak 2.59 -Ps w/16" collar cfm Ak 2.63 -Ps 300 730 .017 820 .028 400 975 .030 1095 .050 500 1220 .047 1370 .078 600 1465 .067 1645 .113 700 1710 .090 1920 .152 800 1950 .120 2190 .200 670 .084 680 .060 695 .039 890 .147 905 .105 930 .068 1115 .