![]() The original purchaser must present a sales receipt or other document that establishes proof of purchase. Proof of purchase is required when requesting warranty service. This warranty does not cover any labor costs, including those required for field repair or replacement or removal of any allegedly defective part. The length of the warranty varies by product. The Air Vent Product that you have purchased has a limited warranty from the date of purchase against defects in workmanship and materials. Read the full warranty and the list of eligible products.įor Warranty information and questions, please contact us at: Full Air Vent Warranty Information Learn about warranty coverage, transferability, limitations, other conditions and customer responsibilities. For information, request a copy of Air Vent's Principles of Attic Ventilation.See Contact Us.īalancing Your Ridge Vent System Length of Ridge Hip roofs, dormers and T- or L-shaped roofs may require a specially designed ventilation system.Always install ridge vents from end to end across the entire ridge for best appearance and to provide maximum ventilation area.Use the chart below to calculate the amount of intake vents that should be installed to balance your ridge vent system.Note: In most cases, the length of the ridge balanced with the same net free area of intake vents will satisfy FHA minimum standards and most building codes. ![]() Refer to the chart above for required net free area and minimum length of ridge for attic square footage.Measure the square footage of the attic (length x width).Note: ShingleVent II and Multi-Pitch FilterVent provide 18" of net free area per linear foot. Determine how much net free area is needed to satisfy FHA requirements. To determine how many feet of ShingleVent® II, Multi-Pitch FilterVent® or VenturiVent Plus™ you need, use this formula: 1/2 net free area x 144 ÷ 18 = feet of ridge vent needed For example: 2.5 (based on net free area of 5 square feet) x 144 ÷ 18 = 20 feet of ridge vent needed To determine how many feet of Air Vent soffit vents you need, use this formula: 1/2 net free area x 144 ÷ 9 = feet of soffit vent needed For example: 2.5 (based on net free area of 5 square feet) x 144 ÷ 9 = 40 feet of soffit vent needed The following charts may be used to: 1. To determine how many feet of net free area you need, use this formula: Square feet of attic floor space If your vents are split between ridge vents and intake vents, the minimum requirement is also 1 square foot of ventilation for every 300 square feet of attic floor space.For new home construction that includes a vapor retarder, the minimum is 1 square foot of ventilation for every 300 square feet of attic floor space.According to most building codes, you need 1 square foot of ventilation for every 150 square feet of attic floor space.THE SIMPLE MATHEMATICS OF A BALANCED RIDGE VENTILATION SYSTEM With a bag of 30 3-inch ring shank nails taped to each 4-foot piece.ĭownload a PDF version of our color chart View the wide range of colors in which our products are available in our pdfġ2” Filtered Shingle-over Ridge Vent with Nailsġ2” Shingle-over Rolled Ridge Vent with Nailsġ2” Filtered Shingle-over Rolled Ridge Vent with Nails Here's an overview of the specifications for Air Vent's complete line of ridge ventilation products. Please call 1-800-AIR-VENT to obtain code body information for a particular Air Vent product. In addition, the vents have product evaluation approvals from Dade County, Florida, ICC and TDI. When installed properly, all Air Vent products mentioned here comply with the net free area requirements of nationally recognized model codes, including those written by the International Code Council.
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