TIMCO 1219W White Timloc 6x3 Plastic Internal Hit and Miss Louvre Mini Vent

Amazon

Designed to cover the inner opening on the cavity sleeve and provide an aesthetically acceptable appearance, while still maintaining a free flow of air. Satisfies all nhbc requirements Simple screw fixing Available in white only Can be open or closed and with an integral fly screen, Weight: 4.7068692937 Pounds, Manufacturer: Timloc

ManoMano

General description Internal white plastic louvre vents designed to sustain airflow and reduce drafts. Other information Please note: Flyscreen and Hit & Miss vents are not to be used for gas appliance ventilation.