
BACK DRAFT DAMPE
round damper to prevent return-air from entering kitchen
R
DIMENSIONS
AB C D E
6” 6” 2-7/8”2-7/8” 1/4”
7”
7” 3-
1/4”
5/8”
8”
3-
8”
MODEL
AK00029
AK00049
AK00069
DUCT
SIZE
6”
7”
8”
FEATURES
- Vertical Duct Application
- Foam Seal for Damper Closure
1/4”
3-
3-
5/8”
1/2”
3/4”
- Galvanized (G-90)
- NOT FOR USE WITH DRYER
VENT APPLICATIONS
E
DC
B
A
3/4 View
TAPERED REDUCER
Reduces round duct size
DUCT
MODEL
AK00039
AK00037
AK00035
AK00040
SIZE
7x6”
8x6”
8x7”
10x8”
FEATURES
- Tapered for Best Air Flow
- Galvanized (G-90)
DIMENSIONS
1-
1-
11-
B
3/4”
3/4”
3/4”
3/4”
A
1-3/4”
3/4”
1-
1-
3/4”
1-3/4”
44-
C
5”
3/4”
1/4”
5”
Side View
B
C
A
Side View
DEC12.0101
2277 Harbor Bay Pkwy | Alameda, CA 94502 | 888.880.VENT | www.zephyronline.com

ROOF CAP EXHAUST, J-VENT
Exhaust cap for round ducting, installs on roof
DUCT
MODEL
AK00046
AK00047
AK00048
AK00050
SIZE
6”
7”
8”
10”
A
B
12”
6”
7”
12”
15”
8”
15” 10” 2-1/2”20”16”
FEATURES
- Low Profile
- Install of Any Roof Pitch
3/4 View
23-
DIMENSIONS
E
D
C
3”
1/2”
1/2”
15”
15”
15”
10”
11”
12”
5-
55-
6-
- Mesh Bird Screen
- Galvanized (G-90)
F
1/8”
1/8”
1/2”
1/2”
GHI
3-
3-
34-
D
E
1/4”
1/4”
1/2”
1/4”
1-
1-
2-
7/8”
7/8”
2”
1/4”
1/4”
3-
1/4”
3-
3-
1/4”
3-
1/2”
C
B
C
Top View
G
F
A
Side View
H
I
WALL CAP EXHAUST, 3-1/4”x10” RECTANGULAR
Exhaust cap for rectangular ducting, prevents return-air, installs on exterior wall
DIMENSIONS
MODEL
AK00041
3-
A
1/4”
BC
5-
10”
FEATURES
- Aluminum Damper Included
- Mesh Bird Screen
- Rain Proof
A
5/8”
D
11”
3/4”
G
9-1/2”
E
5”
F
12-
- Galvanized (G-90)
- NOT FOR USE WITH INLET
VENT APPLICATIONS
C
D
E
G
B
F
DEC12.0101
3/4 View
Front View
2277 Harbor Bay Pkwy | Alameda, CA 94502 | 888.880.VENT | www.zephyronline.com
Top View

WALL CAP EXHAUST, ROUND
Exhaust cap for round ducting, prevents return-air, installs on exterior wall
DUCT
MODEL
AK00042
AK00043
AK00044
AK00045
SIZE
6”
7”
8”
10”
B
A
7-
8-
10”
5/8”
5/8”
6”
7”
8”
10” 12” 13”
FEATURES
- Aluminum Damper Included
- Mesh Bird Screen
3/4 View
911-
C
8”
5/8”
5/8”
DIMENSIONS
1-
1-
D
1”
1”
3/4”
3/4”
E
8-
1/2”
8-1/2”
1/2”
8-
8-
1/2”
1010-
11-
F
9”
1/2”
- Rain Proof
- Galvanized (G-90)
E
F
Top View
3/4”
3/8”
D
A
D
8-
9-
11-
13-
G
5/8”
5/8”
1/8”
5/8”
B
H
7-
1/8”
1/8”
8-
3/8”
1013-
7/8”
C
H
G
Back View
WALL CAP INLET, ROUND
Fresh air inlet for round ducting, commonly used with make-up air kits
DUCT
MODEL
AK00030
AK00031
AK00032
SIZE
6”
7”
8”
FEATURES
- Mesh Bird Screen
- Rain Proof
3/4 View
A
6”
7”
8”
7-
8-
B
5/8”
5/8”
10”
C
8”
9-
5/8”
11-
5/8”
- Galvanized (G-90)
DIMENSIONS
D
E
1”
8-
1/2”
1”
8-1/2”
3/4”
1-
E
1/2”
8-
F
Top View
1010-
F
9”
3/4”
3/8”
G
8-5/8”
9-
5/8”
11-1/8”
D
B
A
D
H
1/8”
7-
1/8”
8-
3/8”
10-
C
HG
Back View
DEC12.0101
2277 Harbor Bay Pkwy | Alameda, CA 94502 | 888.880.VENT | www.zephyronline.com