45IntakeVent

45 Intake Vent

Marco’s 45 Intake Vent is engineered to deliver efficient attic ventilation by allowing fresh air to enter at the roofline, promoting proper airflow and helping extend the life of the roofing system. Made from durable no-break polypropylene, this intake vent is designed to perform in tough conditions while staying lightweight and easy to install. With a low-profile design and compatibility with roof slopes from 3:12 to 16:12, it provides a clean finish without sacrificing performance.

Benefits

 

HydraShell® AIRX-30™ enhances roof system performance by allowing moisture vapor to escape while still providing a durable water-shedding barrier. Its breathable design supports healthier roof assemblies by reducing trapped humidity that can lead to hidden damage over time. Lightweight yet strong, it installs quickly and easily, saving time and labor while offering long-term reliability backed by tested performance standards.

Specs:

Net Free Area: 45 sq. in.

Width: 11 ¾”

Length: 48”

Vent Weight: 1 1/8 lb

Material: No-Break Polypropylene

Color: Black

Limitations:

Roof Slope: 3:12 to 16:12

Design Pressure: -75 psf

Screened and filtered versions available

Codes & Standards:

U.S. Pat. No. 11,746,531

Texas Department of Insurance RV-131

Florida Building Code PENDING

Miami-Dade County NOA No. 24-0313.04

How To Install

All requirements specified in the International Residential Code (IRC) and the International Building Code (IBC) must be satisfied and manufacturer’s installation instructions followed, unless otherwise specified by this product evaluation.

Related Products

Related Products

Python Rolled Ridge Vent

Our recycled plastic, single-layer ridge vent can be used under shingle ridge caps to keep attics cooler and dryer in all seasons.

65 Slant Back Vent

This patented, no-break polypropylene solution can be used as an intake or exhaust vent and features a high Net Free Venting Area of 65 plus a dent-free, low-profile design for greater curb appeal.

150 Round Vent

With 150 square inches of Net Free Venting Area, this no-rust/no-dent no-break polypropylene solution requires only a third of the roof penetrations of typical 50 NFVA vents, saving time and money.
Additional Resources

ADDITIONAL RESOURCES​​

VENTILATION CALCULATOR​​

Calculate the exact amount of ventilation needed for a well-balanced system.

TECHNICAL TOOLS​​

Dive deep into product sheets, diagrams, and full spec breakdowns. 

Roofing FAQ

Learn everything you need to know about ventilation.

Marco Industries