Want it Tuesday 26 Nov. Order now and choose Standard Next Day Delivery at checkout.
Specification
Small Vent 245mm wide x 95mm high
Medium Vent 245mm wide x 170mm high
Large Vent 245mm wide x 245mm high
Preventavent covers must not be used to cover air bricks or vents which are being used for the ventilation of gas appliances. Restriction or even blocking airflow can increase the risk of carbon monoxide poisoning.