The Timloc Cavity Sleeve 212 X 67mm Black is a high-quality and durable building component designed to provide an effective airflow solution in cavity wall construction. With its unique design, this product ensures the prevention of water ingress while allowing ventilation and air movement through the cavity. Manufactured from robust, lightweight plastic, it fits perfectly into a standard 212 x 67mm aperture and can be installed easily without special tools. The Timloc Cavity Sleeve is weather-resistant and compatible with most brick ties, making it an indispensable part of any construction project.