Engineering Bulletin

ManualsBrandsHart & Cooley ManualsAluminum Transfer Grilles & Frames (TG/TGF Series)14" x 14" White Aluminum Transfer Door Grille w/out Frame (TG Series)

TG, TGF Transfer Grilles (Page 27)

200 300 400 500 600 700 800

CFM 90 130 180 220 265 310 350

Ps .08 .17 .30 .47 .68 .93 1.20

CFM 110 165 220 275 330 385 440

Ps .07 .16 .30 .46 .65 .90 1.20

CFM 130 190 255 320 385 450 510

Ps .07 .16 .29 .45 .64 .88 1.10

CFM 150 220 295 370 445 520 590

Ps .07 .16 .28 .44 .63 .87 1.10

CFM 155 235 310 390 470 545 625

Ps .07 .16 .28 .44 .62 .86 1.10

CFM 185 280 370 465 560 650 745

Ps .07 .15 .27 .43 .61 .84 1.10

CFM 225 335 450 560 670 785 895

Ps .07 .15 .26 .42 .60 .82 1.10

CFM 240 360 475 595 715 835 950

Ps .07 .15 .26 .41 .59 .81 1.10

CFM 265 400 530 665 800 930 1065

Ps .07 .15 .26 .41 .58 .88 1.00

CFM 290 440 585 730 875 1020 1170

Ps .06 .15 .26 .40 .58 .79 1.00

CFM 310 460 615 770 925 1080 1230

Ps .06 .14 .25 .40 .57 .78 1.00

CFM 350 525 700 875 1050 1225 1400

Ps .06 .14 .25 .39 .56 .77 1.00

CFM 390 585 780 975 1170 1365 1560

Ps .06 .14 .25 .39 .55 .76 .99

CFM 435 650 870 1085 1300 1520 1740

Ps .06 .14 .25 .38 .54 .75 .98

CFM 485 730 970 1210 1450 1690 1940

Ps .06 .14 .24 .38 .54 .74 .97

CFM 510 765 1020 1275 1530 1785 2040

Ps .06 .14 .24 .37 .53 .73 .96

CFM 650 970 1290 1620 1940 2260 2580

Ps .06 .13 .23 .36 .51 .71 .93

CFM 680 1020 1360 1700 2040 2380 2720

Ps .06 .13 .23 .36 .51 .70 .92

CFM 840 1250 1670 2090 2510 2930 3340

Ps .06 .13 .22 .35 .50 .68 .89

CFM 1030 1550 2060 2580 3090 3610 4120

Ps .05 .12 .22 .34 .48 .66 .86

*Velocity measured 1" from face.

Face Velocity*

8 x 8

Ak .440

14 x 6

Ak .550

12 x 8

Ak .640

16 x 12

Ak 1.190

18 x 12

Ak 1.330

20 x 12

Ak 1.460

16 x 16

Ak 1.540

14 x 8

Ak .740

20 x 6

Ak .780

12 x 12

Ak .930

30 x 6

Ak 1.120

24 x 12

Ak 1.750

30 x 30

Ak 5.150

18 x 18

Ak 1.950

30 x 12

Ak 2.170

20 x 20

Ak 2.420

24 x 18

Ak 2.550

30 x 18

Ak 3.230

24 x 24

Ak 3.400

30 x 24

Ak 4.180

20 Round Diffuser (Page 28)

Engineering Data

20 – Round Diffuser

Face Velocity 5

6”

Ak .16

cfm

Throw

<.01

2.5

110

<.01

130

.014

3.5

145

.016

4.5

160

.020

190

.027

225

.038

255

.049

290

.062

8”

Ak .28

cfm

Throw

140

<.01

3.5

170

<.01

195

<.01

4.5

225

.013

250

.016

5.5

280

.020

6.5

335

.028

7.5

390

.038

450

.050

10.5

505

.063

10”

Ak .44

cfm

Throw

220

<.01

265

<.01

4.5

310

.010

350

.013

395

.016

440

.020

530

.029

615

.041

705

.051

790

.065

12”

Ak .66

cfm

Throw

330

<.01

395

<.01

460

.010

530

.013

595

.017

660

.021

790

.029

925

.040

1025

.050

1190

.063

14”

Ak .91

cfm

Throw

455

<.01

545

<.01

640

.011

730

.014

820

.017

10.5

910

.021

1090

.030

1275

.040

1455

.053

1640

.067

16”

Ak 1.20

cfm

Throw

600

<.01

720

<.01

840

.010

960

.013

10.5

1080

.016

1200

.020

13.5

1440

.028

1680

.039

1920

.050

2160

.063

18”

Ak 1.50

cfm

Throw

750

<.01

900

<.01

1050

.010

1200

.013

1350

.017

13.5

1500

.021

1800

.030

2100

.040

2400

.052

2700

.062

NC<35 NC>35

NOTE: The use of a balancing hood is recommended to balance the system.

Ak = Effective Area in square feet

Ps = Static Pressure Loss in inches of water

NC = Noise Criteria, based on a 10dB room attenuation (Re: 10

-12

watts) ASHRAE 36-72.

Terminal Velocity of 100 fpm

Product tested with core in “out” position.

When diffusers are used on an exposed duct, multiply throw by 0.7

NC <30 NC >35

Recommended Noise Criteria and Face Velocity Ranges are on page 75

Engineering Data

24 Square Ceiling Diffuser (Page 29)

300 400 500 600 700 800 900 1000

.006 .010 .016 .022 .031 .040 .050 .062

CFM 50 65 85 100 115 130 150 165

Throw 3.5 4.5 5.5 6.5 8.0 9.0 10.0 11.0

CFM 85 110 140 170 195 225 250 280

Throw 4.5 5.5 7.0 8.5 10.0 11.0 12.0 14.0

CFM 125 170 210 250 295 335 380 420

Throw 5.0 6.5 8.0 9.5 11.5 13.0 15.0 16.0

CFM 180 240 300 355 415 475 535 595

Throw 6.0 8.0 10.0 11.5 13.5 15.5 17.5 19.0

CFM 245 330 410 490 575 655 740 820

Throw 7.0 9.0 11.5 13.5 16.0 18.0 20.0 22.5

CFM 310 410 515 620 720 825 925 1030

Throw 7.5 10.0 12.5 15.0 18.0 20.0 22.0 25.0

CFM 400 530 665 800 930 1065 1200 1330

Throw 8.5 11.0 14.0 17.0 20.0 23.0 26.0 28.0

CFM 480 640 800 960 1120 1280 1440 1600

Throw 9.5 12.0 16.0 18.0 22.0 25.0 28.0 31.0

CFM 570 760 950 1140 1330 1520 1710 1900

Throw 10.5 13.5 17.0 19.0 24.0 27.0 30.0 33.0

CFM 690 920 1150 1380 1610 1840 2070 2300

Throw 11.0 14.5 18.5 22.0 26.0 30.0 33.0 36.0

Terminal Velocity of 50 FPM

300 400 500 600 700 800 900 1000

.006 .010 .016 .022 .031 .040 .050 .062

CFM 55 65 80 95 105 120 135

Throw 2.5 3.0 3.5 4.0 4.5 5.0 5.5

CFM 70 90 115 135 160 180 200 225

Throw 2.0 3.0 3.5 4.5 5.0 5.5 6.5 7.0

CFM 105 140 175 210 240 275 310 345

Throw 2.5 3.5 4.5 5.0 6.0 7.0 8.0 8.5

CFM 150 200 250 300 350 400 450 500

Throw 3.0 4.0 5.0 6.0 7.5 8.5 9.0 10.5

CFM 190 250 315 375 440 500 565 625

Throw 3.5 4.5 5.5 6.5 8.0 9.0 10.0 11.0

CFM 310 415 520 625 730 830 935 1040

Throw 4.5 6.0 7.0 8.5 10.0 11.5 13.0 14.5

Terminal Velocity of 50 FPM

Neck Size 14"

Ak .625

Neck Size 18"

Ak 1.040

Neck Size 6"

Ak .135

Neck Size 8"

Ak .225

Neck Size 10"

Ak .345

Neck Size 12"

Ak .500

Face Velocity

Pressure Loss

Face Velocity

Neck Size 6"

Ak .165

Neck Size 8"

Ak .280

Neck Size 24"

Ak 2.300

Pressure Loss

Neck Size 10"

Ak .420

Neck Size 12"

Ak .595

Neck Size 14"

Ak .820

Neck Size 16"

Ak 1.030

Neck Size 18"

Ak 1.330

Neck Size 20"

Ak 1.600

Neck Size 22"

Ak 1.900

400 500 600 700 800 900 1000 1200 1400

CFM 80 100 120 140 160 180 200 235 275

Ps <.010 <.010 <.010 <.010 0.014 0.02 0.02 0.03 0.03

Throw 2.00 2.00 2.0 3.0 3.0 4.0 4.0 5.0 6.0

CFM 140 175 210 245 280 315 350 420 490

Ps <.010 <.010 <.010 <.010 0.01 0.02 0.02 0.03 0.04

Throw 3.5 3.0 3.0 4.0 4.0 5.0 5.0 7.0 8.0

CFM 218 273 327 382 436 491 545 654 763