This 135mm round vent features a louvred design and an integrated fly screen to help keep out insects and spiders. It is designed for pipe apertures ranging from 80-152mm. Please note, the fly screen must be removed for use with open flue gas appliances. The vent has a modern black finish for a smart appearance and comes complete with spring fixings. It is suitable for fresh air ventilation in various spaces including sheds, bathrooms, kitchens, garages, and workshops.