Manualshelf

Engineering Bulletin

ManualsBrandsHart & Cooley ManualsCommercial Registers & Grilles30" x 12" (Wall Opening Size) White Commercial Supply Register (821 Series)
1234
Table Of Contents
77
Engineering Data
Recommended Noise Criteria and Face Velocity Ranges are on page 75
821, 831, 92 Series and 98VOH (Page 6-8, 11)
Deflection A
400 500 600 700 800 900 1000 1100 1200 1300 1400 1600 1800 2000
.010 .016 .022 .031 .040 .050 .062 .075 .090 .105 .122 .160 .202 .249
CFM 65 80 100 110 130 145 160 175 190 210 225 255 290 320
Throw 6.5 8.0 10.0 11.0 13.0 15.0 16.0 18.0 19.0 21.0 23.0 26.0 29.0 32.0
CFM 80 100 120 140 160 180 200 220 240 265 285 325 365 405
Throw 7.0 9.0 11.0 13.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 29.0 33.0 36.0
CFM 100 120 145 170 195 220 245 270 295 315 340 390 440 490
Throw 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 28.0 32.0 36.0 40.0
CFM 115 145 170 200 230 255 285 315 345 370 400 460 515 570
Throw 8.5 11.0 13.0 15.0 17.0 19.0 22.0 24.0 26.0 28.0 30.0 35.0 39.0 43.0
CFM 125 155 190 220 250 280 310 345 375 405 435 500 560 625
Throw 9.0 11.0 14.0 16.0 18.0 20.0 22.0 25.0 27.0 29.0 31.0 36.0 41.0 45.0
CFM 125 155 190 220 250 285 315 345 375 410 440 500 565 630
Throw 9.0 11.0 14.0 16.0 18.0 21.0 23.0 25.0 27.0 30.0 32.0 36.0 41.0 45.0
CFM 145 185 220 255 295 330 365 405 440 475 510 585 660 730
Throw 10.0 12.0 15.0 17.0 20.0 22.0 24.0 27.0 29.0 32.0 34.0 39.0 44.0 49.0
CFM 150 190 225 265 305 340 380 415 455 495 530 605 680 760
Throw 10.0 12.0 15.0 17.0 20.0 22.0 25.0 27.0 30.0 33.0 35.0 40.0 45.0 50.0
CFM 170 210 250 295 335 380 420 460 505 545 585 670 755 840
Throw 11.0 13.0 16.0 18.0 21.0 24.0 26.0 29.0 32.0 34.0 37.0 42.0 47.0 53.0
CFM 180 220 265 310 355 400 445 490 535 575 620 710 800 890
Throw 11.0 13.0 16.0 19.0 22.0 24.0 27.0 30.0 32.0 35.0 38.0 43.0 49.0 54.0
CFM 205 255 305 355 410 460 510 560 610 665 715 815 920 1020
Throw 12.0 15.0 17.0 20.0 23.0 26.0 29.0 32.0 35.0 38.0 41.0 47.0 53.0 58.0
CFM 210 265 315 370 420 475 525 580 630 685 735 840 945 1050
Throw 12.0 15.0 18.0 21.0 23.0 27.0 29.0 32.0 35.0 38.0 41.0 47.0 53.0 59.0
CFM 255 315 380 445 505 570 635 695 760 825
890 1015 1140 1270
Throw 13.0 16.0 19.0 23.0 26.0 29.0 32.0 35.0 39.0 42.0 45.0 52.0 58.0 65.0
CFM 255 320 385 445 510 575 640 705 770 830 895 1015 1140 1270
Throw 13.0 16.0 19.0 23.0 26.0 29.0 32.0 36.0 39.0 42.0 45.0 52.0 58.0 65.0
CFM 310 385 465 540 615 695 770 850 925 1000 1080 1235 1390 1540
Throw 14.0 18.0 21.0 25.0 28.0 32.0 35.0 39.0 43.0 46.0 50.0 57.0 64.0 71.0
CFM 345 435 520 610 695 780 870 955 1040 1130 1215 1390 1560 1735
Throw 15.0 19.0 23.0 26.0 30.0 34.0 38.0 41.0 45.0 49.0 53.0 60.0 68.0 75.0
CFM 385 485 580 675 775 870 965 1065 1160 1255 1355 1545 1740 1935
Throw 16.0 20.0 24.0 28.0 32.0 36.0 40.0 44.0 48.0 51.0 56.0 63.0 71.0 79.0
CFM 420 525 625 730 835 940 1045 1150 1255 1360 1465 1670 1880 2090
Throw 17.0 21.0 25.0 29.0 33.0 37.0 41.0 46.0 50.0 54.0 58.0 66.0 74.0 83.0
CFM 525 655 785 915 1050 1180 1310 1440 1570 1705 1835 2095 2360 2620
Throw 19.0 23.0 28.0 32.0 37.0 42.0 46.0 51.0 56.0 60.0 65.0 74.0 84.0 93.0
CFM 530 660 790 925 1055 1185 1320 1450 1585 1715 1845 2110 2375 2640
Throw 19.0 23.0 28.0 33.0 37.0 42.0 46.0 51.0 56.0 60.0 65.0 74.0 84.0 93.0
CFM 630 790 945 1105 1260 1420 1575 1735 1890 2050 2205 2520 2835 3150
Throw 20.0 25.0 30.0 36.0 41.0 46.0 51.0 56.0 61.0 66.0 71.0 81.0 91.0 101.0
CFM 635 795 995 1115 1275 1435 1595 1750 1910 2070 2230 2550 2865 3185
Throw 20.0 25.0 31.0 36.0 41.0 47.0 51.0 56.0 61.0 66.0 71.0 82.0 92.0 102.0
CFM 660 825 990 1160 1325 1490 1655 1820 1985 2150 2315 2645 2975 3310
Throw 21.0 26.0 31.0 37.0 42.0 47.0 52.0 57.0 63.0 68.0 73.0 83.0 94.0 104.0
CFM 795 995 1195 1390 1590 1790 1990 2190 2385 2585 2785 3180 3580 3980
Throw 23.0 29.0 34.0 40.0 46.0 51.0 57.0 63.0 68.0 74.0 80.0 91.0 103.0 114.0
CFM 800 1000 1200 1400 1600 1800 2000 2200 2395 2595 2795 3195 3595 3995
Throw 23.0 29.0 34.0 40.0 45.0 51.0 57.0 63.0 68.0 74.0 80.0 91.0 103.0 114.0
CFM 960 1200 1440 1680 1920 2160 2400 2640 2880 3120 3365 3845 4325 4805
Throw 25.0 31.0 38.0 44.0 50.0
56.0 63.0 69.0 75.0 81.0 88.0 100.0 113.0 125.0
Terminal Velocity of 75 FPM
36 x 12
Ak 2.402
For sizes not listed and sizing tips see page 76
30 x 10
Ak 1.654
36 x 10
Ak 1.989
14 x 4
Ak .286
12 x 6
Ak .379
16 x 5
Ak .419
14 x 6
Ak .444
30 x 8
Ak 1.310
20 x 5
Ak .526
24 x 5
Ak .634
20 x 6
Ak .640
24 x 6
Ak .771
Face Velocity
8 x 4
Ak .160
10 x 4
Ak .202
12 x 4
Ak .244
16 x 6
Ak .510
Pressure Loss
12 x 5
Ak .312
10 x 6
Ak .314
14 x 5
Ak .366
24 x 12
Ak 1.593
20 x 8
Ak .868
30 x 6
Ak .967
24 x 8
Ak 1.045
24 x 10
Ak 1.319
36 x 8
Ak 1.576
30 x 12
Ak 1.997
Deflection C
400 500 600 700 800 900 1000 1100 1200 1300 1400 1600 1800 2000
.010 .016 .022 .031 .040 .050 .062 .075 .090 .105 .122 .160 .202 .249
CFM 55 70 85 100 110 125 140 155 170 180 195 225 250 280
Throw 5.0 6.0 7.5 8.5 9.5 11.0 12.0 14.0 15.0 16.0 17.0 20.0 22.0 24.0
CFM 70 90 105 125 140 160 180 195 215 230 250 285 320 355
Throw 5.0 7.0 8.0 9.5 11.0 12.0 14.0 15.0 17.0 18.0 19.0 22.0 25.0 28.0
CFM 85 110 130 150 170 195 215 235 260 280 300 345 385 430
Throw 6.0 8.0 9.0 11.0 12.0 14.0 15.0 17.0 18.0 20.0 21.0 24.0 27.0 30.0
CFM 100 125 150 175 200 225 250 275 300 330 355 405 455 505
Throw 6.5 8.0 10.0 11.0 13.0 15.0 16.0 18.0 20.0 22.0 23.0 26.0 30.0 33.0
CFM 110 135 165 190 220 245 275 300 330 355 385 440 495 550
Throw 7.0 8.5 10.0 12.0 14.0 15.0 17.0 19.0 21.0 22.0 24.0 28.0 31.0 34.0
CFM 110 140 165 195 220 245 275 305 330 360 385 440 495 550
Throw 7.0 8.5 10.0 12.0 14.0 15.0 17.0 19.0 21.0 22.0 24.0 27.0 31.0 34.0
CFM 130 160 195 225 255 290 320 355 385 415 450 515 580 645
Throw 7.5 9.0 11.0 13.0 15.0 17.0 18.0 21.0 22.0 24.0 26.0 30.0 34.0 37.0
CFM 135 165 200 235 265 300 335 365 400 435 465 535 600 665
Throw 7.5 9.5 11.0 13.0 15.0 17.0 19.0 21.0 23.0 25.0 26.0 30.0 34.0 38.0
CFM 150 185 220 260 295 330 370 405 445 480 515 590 665 740
Throw 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 28.0 32.0 36.0 40.0
CFM 155 195 235 275 315 350 390 430 470 510 545 625 705 780
Throw 8.0 10.0 12.0 14.0 17.0 18.0 20.0 23.0 25.0 27.0 29.0 33.0 37.0 41.0
CFM 180 225 270 315 360 405 450 495 540 580 625 715 805 895
Throw 9.0 11.0 13.0 15.0 18.0 20.0 22.0 24.0 26.0 28.0 31.0 35.0 39.0 44.0
CFM 185 230 280 325 370 415 465 510 555 600 650 740 835 925
Throw 9.0 11.0 13.0 16.0 18.0 20.0 22.0 25.0 27.0 29.0 31.0 36.0 40.0 44.0
CFM 225 280 335 390 445 500 555 615 670 725
780
890 1005 1115
Throw 10.0 12.0 15.0 17.0 19.0 22.0 24.0 27.0 29.0 32.0 34.0 40.0 44.0 49.0
CFM 225 280 340 395 450 505 565 620 675 730 790 900 1015 1125
Throw 10.0 12.0 15.0 17.0 20.0 22.0 25.0 27.0 29.0 32.0 34.0 39.0 44.0 49.0
CFM 270 340 405 475 540 610 680 745 815 880 950 1085 1220 1355
Throw 11.0 14.0 16.0 19.0 21.0 24.0 27.0 30.0 32.0 35.0 38.0 43.0 49.0 54.0
CFM 305 380 460 535 610 685 765 840 915 990 1070 1220 1375 1525
Throw 11.0 14.0 17.0 20.0 23.0 26.0 29.0 32.0 34.0 37.0 40.0 46.0 52.0 57.0
CFM 340 425 510 595 680 765 850 935 1020 1105 1190 1360 1530 1700
Throw 12.0 15.0 18.0 21.0 24.0 27.0 30.0 33.0 36.0 39.0 42.0 48.0 54.0 60.0
CFM 370 460 550 645 735 825 920 1010 1105 1195 1285 1470 1655 1840
Throw 13.0 16.0 19.0 22.0 25.0 28.0 31.0 35.0 38.0 41.0 44.0 50.0 57.0 63.0
CFM 460 575 690 805 920 1035 1150 1265 1380 1500 1615 1845 2075 2305
Throw 14.0 15.0 21.0 25.0 28.0 32.0 35.0 39.0 42.0 46.0 49.0 56.0 63.0 70.0
CFM 465 580 695 810 930 1045 1160 1275 1390 1510 1625 1855 2090 2320
Throw 14.0 18.0 21.0 25.0 28.0 32.0 35.0 39.0 42.0 46.0 49.0 56.0 64.0 71.0
CFM 555 695 830 970 1110 1245 1385 1525 1665 1800 1940 2220 2495 2770
Throw 15.0 19.0 19.0 27.0 31.0 35.0 39.0 42.0 46.0 50.0 54.0 62.0 69.0 77.0
CFM 560 700 840 980 1120 1260 1400 1540 1680 1820 1960 2240 2520 2800
Throw 16.0 19.0 23.0 27.0 31.0 35.0 39.0 43.0 47.0 50.0 54.0 62.0 70.0 78.0
CFM 580 725 870 1020 1165 1310 1455 1600 1745 1890 2035 2325 2615 2910
Throw 16.0 20.0 24.0 28.0 32.0 36.0 39.0 43.0 47.0 51.0 55.0 63.0 71.0 79.0
CFM 700 875 1050 1225 1400 1575 1750 1925 2100 2275 2450 2800 3150 3500
Throw 17.0 22.0 26.0 30.0 35.0 39.0 43.0 48.0 52.0 56.0 61.0 69.0 78.0 87.0
CFM 700 880 1055 1230 1405 1580 1755 1930 2110 2285 2460 2810 3160 3510
Throw 17.0 22.0 26.0 30.0 35.0 39.0 43.0 48.0 52.0 56.0 61.0 69.0 78.0 87.0
CFM 845 1055 1265 1480 1690 1990 2110 2325 2535 2745 2955 3380 3800 4225
Throw 19.0 24.0 28.0 33.0 38.0
43.0
47.0 52.0 57.0 62.0 66.0 76.0 86.0 95.0
Terminal Velocity of 75 FPM
24 x 5
Ak .557
20 x 6
Ak .563
24 x 6
Ak .678
20 x 8
Ak .763
16 x 5
Ak .369
14 x 6
Ak .391
16 x 6
Ak .448
20 x 5
Ak .463
10 x 6
Ak .276
14 x 5
Ak .321
12 x 6
Ak .333
8 x 4
Ak .140
10 x 4
Ak .178
12 x 4
Ak .215
14 x 4
Ak .252
Pressure Loss
12 x 5
Ak .274
30 x 6
Ak .850
24 x 8
Ak .919
Face Velocity
30 x 8
Ak 1.152
24 x 10
Ak 1.160
36 x 8
Ak 1.386
24 x 12
Ak 1.401
30 x 10
Ak 1.454
36 x 10
Ak 1.749
30 x 12
Ak 1.756
36 x 12
Ak 2.112
For sizes not listed and sizing tips see page 76
See Alternate Sizing Graph on Page 118.
*NC 30 NC 35 NC 40 **NC 45
* less than or equal to ** greater than or equal to
Engineering Data
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55 42 22 0 22 42 0 2222
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