Menu
Roof Vents and Roof Vent Accessories

PV-18-C08-CMF | Pop Vent Curb Mount Flange 18″ Diameter 8″ Collar

From: $249.00

PV-18-C08-CMF

  • Roof Curb Options

    A Roof Curb to Elevate the Base of the unit is available, with or without insulation. 

    • 85 $
    • 115 $

  • Metal Finish Options

    All our aluminum products can be painted with a durable baked-on powder coating surface finish.

    • 0 $
    • 35 $
    • 70 $

    Hover (or tap once) to show color with name, Click (or tap again) to select.

    Hover (or tap once) to show color with name, Click (or tap again) to select.

SKU: PV-18-C08-CMF Category:
 
Products with Related Sizes and Features to PV‑18‑C08‑CMF Larger Diameter: PV‑20‑C08‑CMF$317PV-20-C08-CMF | Pop Vent Curb Mount Flange 20″ Diameter 8″ CollarTaller Collar: PV‑18‑C12‑CMF$255PV-18-C12-CMF | Pop Vent Curb Mount Flange 18″ Diameter 12″ CollarSmaller Diameter: PV‑16‑C08‑CMF$181PV-16-C08-CMF | Pop Vent Curb Mount Flange 16″ Diameter 8″ CollarShorter Collar: PV‑18‑C06‑CMF$246PV-18-C06-CMF | Pop Vent Curb Mount Flange 18″ Diameter 6″ Collar
Categories and Pages Related to PV‑18‑C08‑CMF Intake Roof VentsWhy Install Roof Vents? Ventilation Systems
Click to print or download product brochure
PV-18-C08-CMF-brochure
PV-18-C08-CMF

Click the Logo to see the full documentation of Active Ventilation Products approvals on the Florida DBPR web site.
Florida Approval

Active Ventilation Products Pop Vent series has been tested and approved by the State of Florida

CAD Downloads (dwg format):Unmarked Drawing,Drawing With Measurements,Cutaway with Measurements

Click to enlarge pdf for print

Dimensions

Basic dimensions of the Pop Vent and it’s identifying attributes. Primary identifying dimensions of vents and fans are the inside diameter of the Head, which equals the diameter of the hole being vented, and the height of the Collar which is the solid tube between the Head of the vent and the Flange which attaches to the roof.

Inside Diameter:

18 in.
45.7 cm.

Outside Diameter:

26 in.
66 cm.

Square Flange (side length):

22 in.
55.9 cm.

Height of Head:

8 in.
20.3 cm.

Collar Height:

8 in.
20.3 cm.

Height of Flange:

2 in.
5.1 cm.

Total Height with Collar and Flange:

18 in.
45.7 cm.

Louvers

Louvers are the vertical openings in the vent, which facilitates the flow of air, while keeping animals, insects, debris, and embers out.

Louver Height (inside):

2.5 in.
6.4 cm.

Number of Louver Rows (inside):

2

Louver Height (outside):

1.125 in.
2.9 cm.

Size of opening btwn blades (inside):

0.125 in.
0.3175 cm.

Size of opening btwn blades (outside):

0.125 in.
0.3175 cm.

Roof Pitch

Expected snow and rain in your region and the pitch of the roof are the key consideration when choosing the height of the collar of your roof vents. Zones 1 and 2 are not expected to sustain significant snow packs, while zones 3-7 are likely to experience snow, possibly for weeks or months. Vent collars under 4 inches are inappropriate for flat (0/12 pitch) roofs because even heavy rain can splash water into a shorter vent.

Map of Climate Zones

Minimum Pitch Capacity:

0/12

Maximum Pitch Capacity (Standard Vent):

12/12

Maximum Pitch Capacity (Modified):

12/12

Air Flow

Free Air Space:

254.5 sq. in.
1641.7 sq. cm.

Free Air Space:

1.767 sq. ft.
0.164 sq. m.

1:150 Ventilation Rule:

530.14 sq. ft.
49.252 sq. m.

1:300 Ventilation Rule:

1060.29 sq. ft.
98.504 sq. m.
Click to enlarge pdf for print
Click to enlarge pdf for print
Click to enlarge pdf for print

Side View:

Top View:

Side View with Insulation:

Click to enlarge pdf for print

Description

This is a Pop Vent, with a flange for easy mounting onto a roof curb, ideal for flat industrial roofs.