The Plastic Combination Air Brick 9" x 3" is a specialized ventilation component designed to provide sub-floor or room-to-room air circulation while preventing moisture accumulation and dampness. Manufactured from high-grade, durable plastic, this air brick is engineered to resist weather elements, moisture, and corrosion, making it suitable for both external wall installations and internal partition ventilation.
 
Featuring a streamlined louvered or slotted grille face, the unit allows for consistent, optimal airflow while restricting the entry of insects, larger debris, and driving rain into the cavity. Its lightweight construction and standard modular dimensions ensure compatibility with standard brickwork courses, allowing for straightforward integration during new construction or retrofitting projects.
 
Essential for maintaining healthy indoor humidity levels and preventing timber rot or mold growth in sub-floor spaces, this plastic air brick delivers reliable, maintenance-free performance. Whether you are improving sub-floor ventilation, venting a utility room, or upgrading building air circulation, this component offers professional-grade durability and efficient moisture control.
 
Provides high levels of ventilation into cavity walls and under floor voids
Provides 7,600mm2 of airflow per 9x3in airbrick
Can be stacked to produce 9x6in and 9x9in
The brick incorporates a front mounted grille to prohibit large insects gaining access but wide enough not to be blocked by debris, paint or water droplets
A mortar key around the edge of the airbrick ensures secure adhesion to the building fabric while a clip together facility provides a choice of ventilation sizes