Ado Products UDV2248 Rafter Vent 22x48 in Polystyrene

Product Description

The ADO PRODUCTS UDV2248 is an extruded polystyrene foam rafter vent designed to maintain a clear airflow channel between attic insulation and roof sheathing. Measuring 22 inches wide by 48 inches long, it delivers 18.7 square inches of net free air per vent. The full 48-inch length meets the minimum dimension required to ensure uninterrupted airflow through the insulation layer. An extra-wide 1.5-inch nailing flange simplifies fastening to rafter bays during installation. Roofing contractors, insulation crews, and framing carpenters routinely specify this vent on new construction and re-roofing projects where proper attic ventilation is required by code.

This rafter vent is suited for residential and light commercial applications where maintaining a ventilated air channel above blown-in or batt insulation is required. A center pizza cut allows the panel to be split lengthwise into two pieces, making it compatible with 16-inch on-center rafter spacing without additional cutting tools on site. The 22-inch width serves standard 24-inch on-center rafter bays as a single piece. Each package contains 70 units, covering large-scale projects efficiently.

Key Features

• Extruded polystyrene foam construction resists moisture and maintains shape under insulation load
• 18.7 square inches net free air per vent ensures code-compliant airflow through the insulation layer
• Full 48-inch length meets the minimum required to guarantee airflow continuity
• 1.5-inch extra-wide nailing flange allows fast, secure fastening to rafter bays
• Pre-scored center cut splits the vent into two pieces for 16-inch on-center rafter applications
• 70-unit package quantity supports full-roof and large-project installs

Compatibility

Designed as a direct-fit rafter vent for standard 24-inch on-center rafter bays; splits at the factory score line for use in 16-inch on-center framing.

Installation Notes

Installation is typically performed by roofing contractors or insulation crews during new construction or re-roofing before insulation is placed. Secure the vent to the roof sheathing and rafters using the nailing flange with standard roofing staples or nails, ensuring the vent channel runs from soffit to ridge without gaps. Local building codes, including IRC ventilation requirements, should be verified before installation to confirm proper net free area ratios. Do not compress the vent during insulation placement, as compression reduces the effective airflow channel.