Engineering Data
RH90 Registers and Grilles
(Page 26)
| Size / Model | Face Velocity (FPM) | ||||||
|---|---|---|---|---|---|---|---|
| 400 | 500 | 600 | 700 | 800 | 900 | 1000 | |
| 6 x 6 Ak .130 |
50 | 63 | 76 | 88 | 101 | 113 | 126 |
| .012 | .019 | .029 | .038 | .048 | .055 | .065 | |
| 8 x 8 Ak .260 |
103 | 129 | 155 | 181 | 207 | 233 | 259 |
| .011 | .018 | .028 | .037 | .046 | .053 | .063 | |
| 12 x 6 Ak .300 |
119 | 148 | 178 | 208 | 237 | 267 | 297 |
| .011 | .018 | .027 | .036 | .046 | .053 | .063 | |
| 14 x 6 Ak .350 |
141 | 177 | 212 | 248 | 283 | 318 | 354 |
| .011 | .018 | .027 | .036 | .045 | .052 | .062 | |
| 14 x 8 Ak .490 |
195 | 244 | 292 | 341 | 390 | 438 | 487 |
| .011 | .018 | .026 | .035 | .044 | .051 | .061 | |
| 12 x 12 Ak .640 |
256 | 320 | 384 | 448 | 512 | 576 | 640 |
| .011 | .017 | .025 | .033 | .042 | .049 | .059 | |
| 24 x 8 Ak .870 |
348 | 435 | 523 | 610 | 697 | 784 | 871 |
| .010 | .017 | .024 | .032 | .040 | .047 | .057 | |
| 18 x 12 Ak .990 |
395 | 493 | 592 | 691 | 789 | 888 | 987 |
| .010 | .016 | .023 | .031 | .039 | .046 | .056 | |
| 30 x 8 Ak 1.100 |
441 | 552 | 662 | 772 | 882 | 993 | 1103 |
| .010 | .016 | .023 | .030 | .038 | .045 | .055 | |
| 24 x 12 Ak 1.340 |
535 | 668 | 802 | 936 | 1069 | 1203 | 1337 |
| .010 | .016 | .021 | .028 | .036 | .043 | .053 | |
| 18 x 18 Ak 1.510 |
605 | 756 | 907 | 1059 | 1210 | 1361 | 1512 |
| .010 | .016 | .021 | .027 | .035 | .042 | .052 | |
| 30 x 12 Ak 1.690 |
676 | 845 | 1014 | 1182 | 1351 | 1520 | 1689 |
| .010 | .016 | .020 | .026 | .034 | .041 | .051 | |
| 20 x 20 Ak 1.890 |
755 | 943 | 1132 | 1321 | 1509 | 1698 | 1887 |
| .010 | .016 | .019 | .026 | .033 | .040 | .050 | |
| 36 x 12 Ak 2.050 |
818 | 1023 | 1227 | 1432 | 1636 | 1841 | 2045 |
| .010 | .015 | .019 | .025 | .032 | .039 | .049 | |
| 24 x 20 Ak 2.280 |
914 | 1142 | 1370 | 1599 | 1827 | 2055 | 2284 |
| .010 | .015 | .018 | .024 | .031 | .038 | .048 | |
| 30 x 18 Ak 2.580 |
1034 | 1292 | 1551 | 1809 | 2068 | 2326 | 2584 |
| .010 | .015 | .017 | .023 | .030 | .037 | .047 | |
| 24 x 24 Ak 2.770 |
1106 | 1383 | 1659 | 1936 | 2213 | 2489 | 2766 |
| .009 | .015 | .017 | .023 | .030 | .037 | .047 | |
| 36 x 18 Ak 3.130 |
1252 | 1565 | 1878 | 2191 | 2505 | 2818 | 3131 |
| .009 | .015 | .016 | .022 | .029 | .036 | .046 | |
| 30 x 24 Ak 3.500 |
1399 | 1749 | 2099 | 2449 | 2799 | 3149 | 3499 |
| .009 | .015 | .016 | .022 | .029 | .036 | .046 | |
| 36 x 24 Ak 4.240 |
1697 | 2122 | 2546 | 2971 | 3395 | 3819 | 4244 |
| .009 | .014 | .016 | .023 | .031 | .038 | .048 | |
| 30 x 30 Ak 4.430 |
1773 | 2216 | 2659 | 3102 | 3546 | 3989 | 4432 |
| .009 | .014 | .016 | .023 | .031 | .038 | .048 | |
| 36 x 30 Ak 5.380 |
2154 | 2692 | 3231 | 3769 | 4307 | 4846 | 5384 |
| .009 | .014 | .018 | .026 | .036 | .043 | .053 | |
| 48 x 24 Ak 5.770 |
2308 | 2885 | 3462 | 4039 | 4616 | 5193 | 5771 |
| .009 | .014 | .020 | .028 | .039 | .046 | .056 | |
| 36 x 36 Ak 6.550 |
2621 | 3276 | 3931 | 4587 | 5242 | 5897 | 6552 |
| .009 | .014 | .023 | .033 | .045 | .052 | .062 | |
| 48 x 36 Ak 8.970 |
3588 | 4485 | 5382 | 6279 | 7176 | 8073 | 8971 |
| .009 | .014 | .023 | .033 | .045 | .052 | .062 | |
| 48 x 48 Ak 12.400 |
4946 | 6183 | 7419 | 8656 | 9893 | 11129 | 12366 |
| .008 | .013 | .023 | .033 | .045 | .052 | .062 | |
RE5 Series Return Air Registers and Grilles
(Page 23)
| Size / Model | Face Velocity (FPM) | ||||||
|---|---|---|---|---|---|---|---|
| 400 | 500 | 600 | 700 | 800 | 900 | 1000 | |
| 6 x 6 Ak .070 |
30 | 37 | 44 | 52 | 59 | 67 | 74 |
| .010 | .013 | .018 | .023 | .030 | .038 | .049 | |
| 8 x 8 Ak .220 |
87 | 108 | 130 | 152 | 174 | 195 | 217 |
| .010 | .013 | .018 | .023 | .031 | .039 | .049 | |
| 10 x 10 Ak .400 |
160 | 200 | 240 | 280 | 320 | 360 | 400 |
| .010 | .014 | .018 | .024 | .031 | .040 | .050 | |
| 12 x 6 Ak .260 |
103 | 129 | 155 | 180 | 206 | 232 | 258 |
| .010 | .014 | .018 | .024 | .031 | .039 | .049 | |
| 14 x 6 Ak .320 |
127 | 159 | 191 | 223 | 255 | 287 | 319 |
| .010 | .014 | .018 | .024 | .031 | .040 | .050 | |
| 14 x 8 Ak .460 |
184 | 230 | 276 | 322 | 368 | 414 | 460 |
| .011 | .014 | .018 | .024 | .032 | .040 | .050 | |
| 12 x 12 Ak .620 |
249 | 311 | 373 | 435 | 497 | 559 | 622 |
| .011 | .014 | .018 | .025 | .032 | .041 | .051 | |
| 24 x 8 Ak .860 |
345 | 431 | 517 | 603 | 689 | 775 | 862 |
| .011 | .014 | .019 | .025 | .032 | .041 | .052 | |
| 18 x 12 Ak .980 |
392 | 490 | 589 | 687 | 785 | 883 | 981 |
| .012 | .014 | .019 | .025 | .033 | .041 | .052 | |
| 30 x 8 Ak 1.100 |
440 | 550 | 660 | 770 | 880 | 990 | 1100 |
| .012 | .015 | .019 | .025 | .033 | .042 | .052 | |
| 24 x 12 Ak 1.340 |
534 | 668 | 801 | 935 | 1068 | 1202 | 1336 |
| .012 | .015 | .019 | .026 | .033 | .042 | .053 | |
| 18 x 18 Ak 1.510 |
604 | 756 | 907 | 1058 | 1209 | 1360 | 1511 |
| .013 | .015 | .019 | .026 | .033 | .042 | .054 | |
| 30 x 12 Ak 1.690 |
674 | 843 | 1011 | 1180 | 1348 | 1517 | 1685 |
| .013 | .015 | .019 | .026 | .034 | .042 | .054 | |
| 20 x 20 Ak 1.880 |
751 | 939 | 1127 | 1315 | 1502 | 1690 | 1878 |
| .013 | .015 | .019 | .026 | .034 | .043 | .055 | |
| 36 x 12 Ak 2.030 |
812 | 1015 | 1218 | 1422 | 1625 | 1828 | 2031 |
| .014 | .015 | .019 | .026 | .034 | .043 | .055 | |
| 24 x 20 Ak 2.260 |
903 | 1129 | 1355 | 1581 | 1807 | 2033 | 2258 |
| .014 | .016 | .019 | .026 | .034 | .043 | .055 | |
| 30 x 18 Ak 2.540 |
1016 | 1270 | 1524 | 1778 | 2032 | 2286 | 2540 |
| .014 | .016 | .020 | .027 | .034 | .043 | .056 | |
| 24 x 24 Ak 2.710 |
1083 | 1354 | 1625 | 1895 | 2166 | 2437 | 2708 |
| .014 | .016 | .020 | .027 | .034 | .043 | .056 | |
| 36 x 18 Ak 3.040 |
1216 | 1519 | 1823 | 2127 | 2431 | 2735 | 3039 |
| .014 | .016 | .020 | .027 | .035 | .043 | .056 | |
| 30 x 24 Ak 3.370 |
1346 | 1683 | 2019 | 2356 | 2692 | 3029 | 3366 |
| .015 | .016 | .020 | .027 | .035 | .044 | .057 | |
| 36 x 24 Ak 4.010 |
1602 | 2003 | 2403 | 2804 | 3204 | 3605 | 4005 |
| .014 | .016 | .020 | .027 | .035 | .044 | .057 | |
| 30 x 30 Ak 4.160 |
1665 | 2081 | 2497 | 2913 | 3330 | 3746 | 4162 |
| .014 | .016 | .020 | .027 | .035 | .044 | .057 | |
| 36 x 30 Ak 4.930 |
1972 | 2465 | 2958 | 3451 | 3944 | 4437 | 4929 |
| .014 | .016 | .021 | .028 | .035 | .044 | .056 | |
| 48 x 24 Ak 5.230 |
2091 | 2614 | 3137 | 3660 | 4183 | 4705 | 5228 |
| .013 | .016 | .021 | .028 | .036 | .045 | .055 | |
| 36 x 36 Ak 5.810 |
2325 | 2906 | 3487 | 4068 | 4650 | 5231 | 5812 |
| .012 | .016 | .021 | .028 | .036 | .045 | .053 | |
| 48 x 36 Ak 7.450 |
2981 | 3726 | 4471 | 5216 | 5961 | 6706 | 7452 |
| .012 | .013 | .021 | .028 | .036 | .045 | .044 | |
| 48 x 48 Ak 9.380 |
3751 | 4689 | 5626 | 6564 | 7502 | 8439 | 9377 |
| .012 | .013 | .021 | .029 | .037 | .046 | .044 | |
For sizes not listed and sizing tips see page(s) 76
Recommended Noise Criteria and Face Velocity Ranges are on page 75








