Engineering Bulletin

406 18” Baseboard Diffuser (Page 6)
300 400 500 600 700 800
.013 .022 .035 .048 .067 .088
CFM 80 105 130 155 180 210
Spread 4.5 6.5 7.5 8.5 9.5 11.0
Throw 5.0 7.0 8.0 9.0 10.0 11.0
Terminal Velocity of 50 FPM
300 400 500 600 700 800 900 1000
CFM 48 63 79 95 111 127 143 159
Ps .005 .009 .014 .020 .027 .035 .044 .053
Throw 50 5.5 7.5 9.0 11.0 13.0 14.5 16.5 18.5
Spread FPM 5.5 7.5 7.5 11.5 13.5 15.0 17.0 19.0
Throw 100 3.0 3.5 4.5 5.5 6.5 7.5 8.5 9.0
Spread FPM 3.0 3.5 4.5 5.5 6.5 7.5 9.0 9.5
Throw 150 2.0 2.5 3.0 3.5 4.5 5.0 5.5 6.0
Spread FPM 2.0 2.5 3.0 3.5 4.5 5.0 5.5 6.0
Face Velocity
15"
Ak .159
Face Velocity
Pressure Loss
Ak .260
462 & 464 Baseboard Diffusers (Page 7, 8)
300 400 500 600 700 800
CFM 55 75 95 110 130 150
Spread 6.5 7.5 8.0 8.5 9.0 11.0
Throw 7.0 8.0 9.5 10.5 12.0 13.0
Pressure Loss .009 .017 .029 .038 .054 .072
CFM 110 150 185 225 260 300
Spread 12.0 15.0 17.5 19.0 20.0 21.0
Throw 7.5 9.0 10.0 11.5 12.5 13.5
Pressure Loss .031 .058 .090 .124 .178 .224
Terminal Velocity of 50 FPM
2 feet
27 sq. in.
Ak .187
4 feet
54 sq. in.
Ak .375
Airflow (CFM)
472 & 474 Baseboard Return (Page 7, 8)
300 400 500 600 700
2 feet CFM 100 130 165 195 230
Ak .325 Ps .010 .028 .046 .064 .090
4 feet CFM 195 260 325 390 455
Ak .650 Ps .015 .026 .040 .060 .078
Velocity measured on the face
Face Velocity
654, 655 Baseboard/Sidewall Registers
(Page 9)
300 400 500 600 700 800 900 1000
.006 .010 .016 .022 .031 .040 .050 .062
8 x 6 CFM 55 72 90 108 125 145 162 180
Ak .180 Throw 7.5 10.0 12.5 15.0 17.5 20.5 23.0 25.0
10 x 6 CFM 70 92 115 140 160 185 205 230
Ak .230 Throw 9.0 11.5 14.5 17.5 20.0 23.0 25.5 29.0
12 x 6 CFM 85 115 145 175 205 230 260 290
Ak .290 Throw 10.0 13.0 17.0 20.0 23.5 26.5 30.0 33.0
14 x 6 CFM 102 135 170 205 240 270 305 340
Ak .340 Throw 11.0 14.5 18.0 22.0 25.5 29.0 32.5 36.0
Terminal Velocity of 75 FPM
Face Velocity
Pressure Loss
657/658 Baseboard Return Grille (Page 9)
300 400 500 600 700
10 x 6 CFM 115 150 190 225 265
Ak .38 Pt .013 .023 .037 .052 .072
12 x 6 CFM 135 180 230 280 320
Ak .46 Pt .013 .022 .035 .051 .070
10 x 8 CFM 150 205 255 305 355
Ak .51 Pt .012 .022 .035 .050 .068
14 x 6 CFM 160 210 265 320 370
Ak .53 Pt .012 .022 .035 .050 .068
12 x 8 CFM 180 245 305 365 430
Ak .61 Pt .012 .022 .034 .049 .066
14 x 8 CFM 215 288 360 430 505
Ak .72 Pt .012 .021 .033 .047 .065
20 x 6 CFM 225 300 375 450 525
Ak .75 Pt .012 .021 .033 .047 .064
16 x 8 CFM 250 330 415 500 580
Ak .83 Pt .012 .021 .033 .046 .063
14 x 10 and 24 x 6 CFM 275 365 460 550 640
Ak .92 Pt .011 .020 .032 .045 .062
14 x 12 CFM 320 430 540 650 755
Ak 1.08 Pt .011 .020 .031 .045 .060
30 x 6 CFM 335 445 560 670 780
Ak 1.12 Pt .011 .020 .031 .044 .060
24 x 8 CFM 365 485 605 730 850
Ak 1.21 Pt .011 .020 .031 .044 .059
20 x 10 CFM 375 500 630 750 880
Ak 1.25 Pt .011 .019 .030 .043 .059
24 x 10 and 30 x 8 CFM 450 600 750 890 1040
Ak 1.50 Pt .011 .019 .030 .042 .057
24 x 12 CFM 550 730 910 1100 1270
Ak 1.82 Pt .010 .018 .029 .041 .056
30 x 10 CFM 575 760 960 1150 1330
Ak 1.91 Pt .010 .018 .029 .041 .055
30 x 12 CFM 680 900 1130 1350 1570
Ak 2.25 Pt .010 .018 .028 .040 .054
*Velocity measured 1" from face
Average Face Velocity*
664 Baseboard Register (Page 10)
300 400 500 600 700 800 900 1000
.006 .010 .016 .022 .031 .040 .050 .062
8 x 6 CFM 55 70 90 110 125 145 160 180
Ak .180 Throw 5.5 7.0 9.0 10.5 12.5 14.0 16.0 18.0
10 x 6 and 12 x 5 CFM 75 100 125 145 170 195 220 245
Ak .245 Throw 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
14 x 6 CFM 110 145 180 215 252 290 325 360
Ak .360 Throw 7.0 9.5 12.0 14.0 16.5 19.0 21.5 24.0
12 x 8 CFM 130 170 215 255 300 340 385 425
Ak .425 Throw 7.5 10.0 12.5 15.0 18.0 20.5 23.0 25.5
Terminal Velocity of 75 FPM
Face Velocity
Pressure Loss
406 15” Baseboard Diffuser (Page 6)
300 400 500 600 700 800
.013 .022 .035 .048 .067 .088
CFM 80 105 130 155 180 210
Spread 4.5 6.5 7.5 8.5 9.5 11.0
Throw 5.0 7.0 8.0 9.0 10.0 11.0
Terminal Velocity of 50 FPM
300 400 500 600 700 800 900 1000
CFM 48 63 79 95 111 127 143 159
Ps .005 .009 .014 .020 .027 .035 .044 .053
Throw 50 5.5 7.5 9.0 11.0 13.0 14.5 16.5 18.5
Spread FPM 5.5 7.5 7.5 11.5 13.5 15.0 17.0 19.0
Throw 100 3.0 3.5 4.5 5.5 6.5 7.5 8.5 9.0
Spread FPM 3.0 3.5 4.5 5.5 6.5 7.5 9.0 9.5
Throw 150 2.0 2.5 3.0 3.5 4.5 5.0 5.5 6.0
Spread FPM 2.0 2.5 3.0 3.5 4.5 5.0 5.5 6.0
Face Velocity
15"
Ak .159
Face Velocity
Pressure Loss
Ak .260
Recommended Noise Criteria and Face Velocity Ranges are on page 37
Engineering Data
41
Engineering Data