Product Details
Application
Attic, Exhaust, Static
Location
Roof
J Vent – Galvanized
SKU JV
Price range: $39.95 through $321.95
The FAMCO Difference
- Quality constructed from heavy-duty 28-26 gauge galvanized steel, depending on size
- Great for attic (static) ventilation and can be used with most roofing materials
- Provides a low silhouette and is open on two sides for better air flow
- Helps eliminate attic moisture and heat build-up
- Works best when used with soffit or gable end venting
- Comes with a built in ⅛ inch screen
- Available in opening sizes ranging from 3 – 20 inch diameters
Shipping & Returns
Description
The FAMCO JV J Vent rooftop ventilator is great for attic (static) ventilation and can be used with most roofing materials. It provides a low silhouette and is open on two sides for better air flow. It helps eliminate attic moisture and heat build-up. This roof vent works best when used with soffit or gable end venting. Comes with a built in ⅛ inch screen. Quality constructed from heavy-duty 28-26 gauge galvanized steel, depending on size.
The FAMCO JV J Vent rooftop ventilator come in opening sizes ranging from 3 - 20 inch diameter. The FAMCO JV J Vent rooftop ventilator is manufactured by FAMCO in the United States and comes with a 1-year warranty against product defects and workmanship. If you have any questions about this product, please refer to the FAQs above or feel free to contact us.
Resources
Product Specs
Reviews (3)
3 reviews for J Vent – Galvanized
5.00
Based on 3 customer reviews.
1-3 of 3 reviews
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Questions & Answers (1)
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Q
Can this be used with a 14 inch diameter single wall duct pipe for exhaust?
A
The J-Vent is not intended for exhaust use, it is designed for attic ventilation. For a list of our roof exhaust vents, please see our product categories under Products > Roof Vents > Piped Exhaust Vent.
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Q
Do you have a vent this style that the base is 8x8? It's for a metal roof.
A
The smallest base size we offer for the J-vent is a 9"X9" flange, which would be for either the 3" or 4" diameter size.
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Q
The JV-12 has a free area of 113.09 does this mean for a 1000sqft flat roof I need 9 (8.84) vents. 1000sqft / 113.09 = 8.84. That seems like a lot of vents for vents that are that size.
A
The U.S. Department of Housing and Urban Development Statutes typically require one sq. foot of net free vent area per 150 square feet of attic area to be vented (1/150 rule). We do have an attic ventilation calculator on our website under the "Resources Tab". According to that calculation tool, you would need 960 sq. inches of net free vent area. You are correct in that you would need 9 of the JV12 vents to reach this amount of net free vent area.
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Just what I needed
Looking to increases roof vent and this was perfect. Heavy duty and quality. Happy with purchase.
Great product
If you are looking for a small vent for any type roof, this is the one to get, excellently made, very sturdy and great looking. I purchased 2 for a storage unit and will be getting more for my garage.