This polypropylene interlocking airbrick has been designed for a wide range of ventilation applications. 20mm deep louvers set at 43° to act as barriers against driving rain, a two step integral water barrier has also been incorporated. All Airbricks are supplied with mortar key and keyed surface permitting painting if required. Exceeds the requirements of BS 5540-2 and BS 493.

DIMENSIONS:
Overall size: 9" x 3".
Free area: 78 cm² (12 sq. inch).