Manualshelf

Engineering Bulletin

ManualsBrandsHart & Cooley Manuals1/3 Inch Spacing (650 Series)14" x 30" (Wall Opening Size) White Return Air Grille (650 Series)
1
650 & A650 Return Air Grille (Page 17, 18)
659 Return Air Filter Grille (Page 18)
Face velocity 300 400 500 600 700
6
x 4 CFM 33 44 55 66 77
Ak 0.111 Ps 0.010 0.018 0.029 0.041 0.056
6
x 6 CFM 50 67 83 100 117
Ak 0.167 Ps 0.010 0.018 0.029 0.041 0.056
8
x 4 CFM 44 59 74 89 104
Ak 0.148 Ps 0.010 0.018 0.029 0.041 0.056
8
x 6 CFM 67 89 112 134 156
Ak 0.223 Ps 0.010 0.018 0.029 0.041 0.056
8
x 8 CFM 90 120 150 179 209
Ak 0.299 Ps 0.010 0.018 0.029 0.041 0.056
10
x 4 CFM 56 74 93 111 130
Ak 0.186 Ps 0.010 0.018 0.029 0.041 0.056
10
x 6 CFM 84 112 140 168 196
Ak 0.28 Ps 0.010 0.018 0.029 0.041 0.056
10
x 8 CFM 112 150 187 225 262
Ak 0.375 Ps 0.010 0.018 0.029 0.041 0.056
10
x 10 CFM 141 188 235 282 329
Ak 0.47 Ps 0.010 0.018 0.029 0.041 0.056
12
x 6 CFM 101 135 168 202 236
Ak 0.337 Ps 0.010 0.018 0.029 0.041 0.056
12
x 8 CFM 135 180 226 271 316
Ak 0.451 Ps 0.010 0.018 0.029 0.041 0.056
12
x 10 CFM 170 226 283 339 396
Ak 0.566 Ps 0.010 0.018 0.029 0.041 0.056
12
x 12 CFM 204 272 340 408 476
Ak 0.681 Ps 0.010 0.018 0.029 0.041 0.056
12
x 18 CFM 308 411 513 616 719
Ak 1.027 Ps 0.010 0.018 0.029 0.041 0.056
14
x 6 CFM 118 158 197 236 276
Ak 0.394 Ps 0.010 0.018 0.029 0.041 0.056
14
x 8 CFM 158 211 264 316 369
Ak 0.527 Ps 0.010 0.018 0.029 0.041 0.056
14
x 10 CFM 198 265 331 397 463
Ak 0.661 Ps 0.010 0.018 0.029 0.041 0.056
14
x 12 CFM 239 318 398 477 557
Ak 0.796 Ps 0.010 0.018 0.029 0.041 0.056
14
x 14 CFM 279 372 465 558 651
Ak 0.93 Ps 0.010 0.018 0.029 0.041 0.056
14
x 18 CFM 360 480 600 720 840
Ak 1.2 Ps 0.010 0.018 0.029 0.041 0.056
Face velocity 300 400 500 600 700
16
x 6 CFM 135 180 226 271 316
Ak 0.451 Ps 0.010 0.018 0.029 0.041 0.056
16
x 8 CFM 181 242 302 362 423
Ak 0.604 Ps 0.010 0.018 0.029 0.041 0.056
16
x 10 CFM 227 303 379 454 530
Ak 0.757 Ps 0.010 0.018 0.029 0.041 0.056
16
x 12 CFM 273 364 455 547 638
Ak 0.911 Ps 0.010 0.018 0.029 0.041 0.056
16
x 14 CFM 320 426 533 639 746
Ak 1.065 Ps 0.010 0.018 0.029 0.041 0.056
16
x 16 CFM 366 488 610 732 854
Ak 1.219 Ps 0.010 0.018 0.029 0.041 0.056
16
x 24 CFM 552 736 920 1104 1288
Ak 1.84 Ps 0.010 0.018 0.029 0.041 0.057
18
x 6 CFM 153 203 254 305 356
Ak 0.508 Ps 0.010 0.018 0.029 0.041 0.056
18
x 18 CFM 465 619 774 929 1084
Ak 1.548 Ps 0.010 0.018 0.029 0.041 0.057
20
x 6 CFM 170 226 283 339 396
Ak 0.566 Ps 0.010 0.018 0.029 0.041 0.056
20
x 10 CFM 285 380 475 570 665
Ak 0.949 Ps 0.010 0.018 0.029 0.041 0.056
20
x 12 CFM 343 457 571 685 800
Ak 1.142 Ps 0.010 0.018 0.029 0.041 0.056
20
x 14 CFM 401 534 668 801 935
Ak 1.335 Ps 0.010 0.018 0.029 0.041 0.056
20
x 20 CFM 575 767 959 1150 1342
Ak 1.917 Ps 0.010 0.018 0.029 0.041 0.057
20
x 24 CFM 692 923 1153 1384 1615
Ak 2.307 Ps 0.010 0.019 0.029 0.042 0.057
20
x 25 CFM 721 962 1202 1442 1683
Ak 2.404 Ps 0.010 0.019 0.029 0.042 0.057
Face velocity 300 400 500 600 700
24
x 4 CFM 135 180 226 271 316
Ak 0.451 Ps 0.010 0.018 0.029 0.041 0.056
24
x 6 CFM 204 272 340 408 476
Ak 0.681 Ps 0.010 0.018 0.029 0.041 0.056
24
x 8 CFM 273 364 455 547 638
Ak 0.911 Ps 0.010 0.018 0.029 0.041 0.056
24
x 10 CFM 343 457 571 685 800
Ak 1.142 Ps 0.010 0.018 0.029 0.041 0.056
24
x 12 CFM 412 550 687 825 962
Ak 1.374 Ps 0.010 0.018 0.029 0.041 0.056
24
x 14 CFM 482 643 803 964 1125
Ak 1.607 Ps 0.010 0.018 0.029 0.041 0.057
24
x 22 CFM 762 1016 1270 1524 1778
Ak 2.541 Ps 0.010 0.019 0.029 0.042 0.057
24
x 24 CFM 832 1110 1387 1665 1942
Ak 2.775 Ps 0.010 0.019 0.029 0.042 0.057
30
x 4 CFM 170 226 283 339 396
Ak 0.566 Ps 0.010 0.018 0.029 0.041 0.056
30
x 6 CFM 256 341 427 512 597
Ak 0.853 Ps 0.010 0.018 0.029 0.041 0.056
30
x 8 CFM 343 457 571 685 800
Ak 1.142 Ps 0.010 0.018 0.029 0.041 0.056
30
x 10 CFM 430 573 716 859 1003
Ak 1.432 Ps 0.010 0.018 0.029 0.041 0.056
30
x 12 CFM 517 689 862 1034 1206
Ak 1.723 Ps 0.010 0.018 0.029 0.041 0.057
30
x 14 CFM 604 806 1007 1209 1410
Ak 2.015 Ps 0.010 0.018 0.029 0.042 0.057
30
x 18 CFM 780 1040 1300 1560 1819
Ak 2.599 Ps 0.010 0.019 0.029 0.042 0.057
30
x 20 CFM 868 1157 1446 1735 2025
Ak 2.892 Ps 0.010 0.019 0.029 0.042 0.057
30
x 24 CFM 1044 1392 1740 2088 2436
Ak 3.479 Ps 0.010 0.019 0.029 0.042 0.057
30
x 30 CFM 1309 1745 2181 2618 3054
Ak 4.363 Ps 0.010 0.019 0.029 0.042 0.057
36
x 6 CFM 308 411 513 616 719
Ak 1.027 Ps 0.010 0.018 0.029 0.041 0.056
36
x 8 CFM 412 550 687 825 962
Ak 1.374 Ps 0.010 0.018 0.029 0.041 0.056
651 Baseboard Register (Page 18)
Face Velocity
300
400
500
600
700
800
900
1000
Pressure Loss
.006
.010
.016
.022
.031
.040
.050
.062
8x4
Ak .11
cfm
Throw
33
6
44
8
55
10
66
12
77
14
88
16
100
18
110
20
10x4
Ak .135
cfm
Throw
40
6.5
54
8.5
67
10.5
80
12.5
95
15
110
17.5
120
19
135
21
12x4 & 8x6
Ak .18
cfm
Throw
55
7.5
72
10
90
12.5
108
15
125
17.5
145
20.5
162
23
180
25
10x6
Ak .23
cfm
Throw
70
9
92
11.5
115
14.5
140
17.5
160
20
185
23
205
25.5
230
29
12x6
Ak .29
cfm
Throw
85
10
115
13
145
17
175
20
205
23.5
230
26.5
260
30
290
33
14x6
Ak .34
cfm
Throw
102
11
135
14.5
170
18
205
22
240
25.5
270
29
305
32.5
340
36
Engineering Data
Engineering Data
110
*Tested without filters. Typical disposable 1-inch 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.
*
*
*

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