Roof Ventilation Systems: Cor-A-Vent V-300® Ridge Ventilation System

V-300 Roof
NEW V-300E in 11", 8 1/2" and 7" widths are the same great product as regular V-300® but with an added Enhanced Snow Screen™ to prevent fine snow from entering the ridge vent.

The V-300 product line is our lowest profile ridge vent line. It works equally well under shingles as well as shakes or slate roofing. V-300E products are ideal for hip use. The low profile make the hip vent blend in with the roof. If you are looking for a low profile ridge vent that still provides plenty of ventilation our V-300® product line is your answer.
V-300 used with Shingles V-300 used with Shingle
V-300 used with Flat Tile V-300 used with Flat Tile
Key Benefits
  • 13.5 sq. in NFVA per lineal foot
  • 5/8 inch low profile design
  • Use V-300®E as a hip vent
  • 3 widths to choose from: 11", 8 1/2" and 7"
  • Use on  all slopes from 3/12 to 16/12
  • Crush Proof Design
  • Made from heat resistant polypropylene
For dimensions open the End View 1 PDF & End View 2 Pdf files.
For dimensions if you have AutoCad open the End View 1 Dwg & End View 2 Dwg files.
You can also view our "Balanced Ventilation: How it works" FAQ sheet.
V-300® Brochure click here.
Frequently asked questions (FAQ) click here.
Click here for our complete list of Technical Drawings.

Product Packaging and Shipping Information for V-300® 11", 8.5" and 7" widths 
Pcs Per Unit

12 - 4 foot pcs.
Shipping Weight Per Unit

30 lbs.

To request more information about the V-300 click here to contact us.


Figure your Ventilation Needs

Enter your Square footage of your building footprint below and click "Calculate" to find the amount of Lineal Feet of V-300® you need for your project.

Specify your vent ratio:
1/300 ratio 1/150 ratio Building Footprint: sq. feet.    

You need Lineal feet of V-300®.
Note: Remember to provide balanced soffit ventilation also.
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