Air bricks

The AirEx brick is a retrofit replacement to existing air bricks in dwellings. It has in-built sensors to measure the environmental conditions (such as temperature and relative humidity and indoor air quality) and use smart software algorithms to automatically regulate airflow. Each brick opens to reduce humidity and stop mould and damp, and

Manufactures several types of ventilation product, including a polypropylene air brick for incorporation in masonry walls. The brick may be used with compatible straight and telescopic sleeves, to ventilate specific areas. It can also be used without attachments, for cavity ventilation. Ventilators for roofs, eaves, soffits and fascias are also

Supplies roof space, underfloor, cavity and wall ventilators. A telescopic underfloor ventilator is offered, which allows adjustment between three to five courses of brickwork, and a free airflow of more than 7000mm2 per unit. Cavity tray and vermin screen attachments are available. A combination brick ventilator comes in standard brick size and

Manufactures through wall ventilation systems. The companys air brick has been designed to provide high levels of ventilation into cavity walls and underfloor voids. The brick features a front mounted insect grille together with a water deflector and includes a 20mm integral rear upstand. Available in terracotta, blue / black and brown colours

Precon blocks, masonry and ready mix concrete offer a range of products to maximise design capabilities without compromising structural integrity

Manufactures low profile hit and miss ventilators which allow the amount of air entering a room to be controlled by the occupant. Features include an integral flyscreen, flush face, slim design and concealed fixings. Also offers louvre ventilators in plastic, aluminium or brass, as well as cavity, underfloor, through-wall and room ventilators

A company of iron founders producing castings in ductile and grey iron. Five models of air-brick are offered, including a square hole pattern meeting gas supply requirements; a square hole pattern fitted with brass screws creating a removable front; and a louvre pattern. Some sizes of air-bricks can be supplied fitted with perforated zinc sheet or