Carnes FPBB User Manual

SPECIFICATION SHEET

Model FPBB Channel Frame, FTBB Flanged Frame

Combination Louver/Backdraft Damper, Exhaust

Model FPQB Channel Frame, FTQB Flanged Frame

Combination Louver/Backdraft Damper, Supply

CARNES COMPANY, 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: [phone] Fax: [phone] [e-mail]

CARNES COMPANY © 2010 COPYRIGHT

ALL RIGHTS RESERVED

30097, pg 1

Model FPPB and FPQB

Standard Specifications
Frame: .081 extruded aluminum, 4-1/8” deep
Fixed Blades: .081 extruded aluminum positioned on a 39° angle on

approximately 4.25” centers
Damper Blade: .060 extruded aluminum (blades move independent of
each other)

Finish: mill aluminum (standard)
Birdscreen: 3/4” x .051” flattened aluminum in removable frame. Screen is

mounted as standard on inside (rear) as looking from exterior of building.

Maximum Single Section: 60”w x 120”h
Minimum Size: 12”w x 12”h

Options Finishes

- Flanged Frame (1-1/2” std.) - Clear Anodize

- Extended Sill - Dark Bronze

- Glazing Adapter (1/2” or 3/4”) - Baked Enamel

- Insect Screens - Kynar

- Blade Seals - Prime Coat

- Filter Racks

- Security Bars

- Welded Const. (wind load 50 p.s.f.)

Tag Qty.

Size

Frame Variations

Width Height

Project Location
Arch./Engr. Contractor
Representative Date

4.16”

4.25”

Flanged Frame

Optional

1.50”

FPPB (Exhaust)

*H

*W

Extended Sill

Optional

4.16”

4.25”

FPQB (Supply)

Glazed Adapter

Optional

5.25”

1”

50” or .75”

(.75” std.)

*Width and Height dimensions are approximately 1/4” under listed size.

30097, pg 2

FPPB Free Area in Square Feet

HEIGHT

INCHES

WIDTH IN INCHES

12 18 24 30 36 42 48 54 60
12 0.24 0.39 0.55 0.70 0.85 1.00 1.15 1.30 1.45
18 0.47 0.75 1.04 1.32 1.61 1.90 2.18 2.47 2.76
24 0.66 1.06 1.47 1.88 2.28 2.69 3.09 3.50 3.90
30 0.93 1.51 2.08 2.65 3.23 3.80 4.38 4.95 5.52
36 1.09 1.76 2.43 3.09 3.76 4.43 5.10 5.77 6.44
42 1.35 2.18 3.00 3.83 4.66 5.49 6.32 7.15 7.98
48 1.55 2.51 3.47 4.42 5.38 6.34 7.29 8.25 9.21
54 1.76 2.84 3.93 5.01 6.10 7.18 8.26 9.35 10.43
60 2.02 3.26 4.50 5.74 6.98 8.22 9.46 10.70 11.94
66 2.02 3.26 4.50 5.74 6.98 8.22 9.46 10.70 11.94
72 2.45 3.96 5.46 6.97 8.48 9.98 11.49 13.00 14.51
78 2.61 4.22 5.82 7.43 9.04 10.64 12.25 13.86 15.46
84 2.86 4.63 6.39 8.15 9.91 11.67 13.44 15.20 16.96
90 3.10 5.01 6.92 8.83 10.73 12.64 14.55 16.46 18.37
96 3.28 5.29 7.31 9.33 11.35 13.36 15.38 17.40 19.41

102 3.55 5.74 7.92 10.11 12.29 14.48 16.66 18.85 21.04
108 3.72 6.01 8.30 10.59 12.88 15.17 17.46 19.75 22.04
114 3.97 6.41 8.85 11.29 13.73 16.17 18.61 21.05 23.49
120 4.19 6.76 9.34 11.92 14.49 17.07 19.64 22.22 24.80

FPQB Free Area in Square Feet

HEIGHT

INCHES

WIDTH IN INCHES

12 18 24 30 36 42 48 54 60
12 0.25 0.40 0.56 0.71 0.87 1.02 1.17 1.33 1.48
18 0.48 0.77 1.06 1.36 1.65 1.94 2.24 2.53 2.82
24 0.68 1.10 1.52 1.94 2.36 2.78 3.20 3.62 4.04
30 0.96 1.55 2.14 2.74 3.33 3.92 4.51 5.10 5.69
36 1.12 1.81 2.50 3.19 3.88 4.57 5.26 5.95 6.64
42 1.39 2.25 3.11 3.96 4.82 5.68 6.54 7.39 8.25
48 1.61 2.60 3.58 4.57 5.56 6.55 7.54 8.53 9.52
54 1.82 2.95 4.07 5.19 6.32 7.44 8.56 9.68 10.81
60 2.08 3.37 4.65 5.93 7.22 8.50 9.78 11.07 12.35
66 2.09 3.38 4.66 5.95 7.24 8.52 9.81 11.10 12.38
72 2.54 4.10 5.66 7.22 8.78 10.34 11.90 13.46 15.02
78 2.70 4.37 3.03 7.69 9.36 11.02 12.68 14.35 16.01
84 2.97 4.79 6.62 8.44 10.27 12.10 13.92 15.75 17.57
90 3.21 5.19 7.16 9.14 11.11 13.09 15.06 17.04 19.02
96 3.40 5.49 7.58 9.67 11.76 13.86 15.95 18.04 20.13

102 3.68 5.94 8.20 10.47 12.73 14.99 17.26 19.52 21.78
108 3.85 6.23 8.60 10.97 13.34 15.71 18.08 20.45 22.83
114 4.11 6.64 9.17 11.70 14.23 16.75 19.28 21.81 24.34
120 4.34 7.00 9.67 12.34 15.01 17.68 20.35 23.01 25.68

FPPB and FPQB Selection and Examples

Example 1:

Airflow given as 10,000 cfm – select four louver sides

A. Determine louver free area by dividing airflow by free area
velocity (do not exceed 1050 fpm on intake louver application).

10,000 cfm ÷ 1050 fpm = 9.52 sq. ft.
Airflow ÷ Velocity = Free Area

B. Select a louver size with at least the required free area from the
chart above (9.52 sq. ft.).

42” wide x 72” high FPPB louver = 9.98 sq. ft.
(other sections available, see chart above)

C. Check the pressure drop of the selected louver at the selected
louver given airflow (Airflow Resistance Chart on page 2).

ΔP at 750 fpm = X.XX in. w.g.
Free Area Velocity Pressure Drop

Example 2:

Louver size given 36” wide x 48” high.
Determined maximum airflow.

A. Use Free Area Chart to determine

Free Area = 5.38 sq. ft.

B. Multiply Free Area by Free Area Velocity (do not exceed 1050
fpm on intake louver applications).

5.38 sq. ft. x 1050 fpm = 5,649 cfm
Free Area x Max. Free Area Velocity = Max Airflow

Model FPPB/FTPB and FPQB/FTQB