The limited height of the NilAIR valves means that they are not very noticeable once installed. The supply air valves are installed in e.g., living-room, kitchen, and bedrooms where they deliver fresh air to the dwelling.
KIR supply air valves are mounted with an air direction plate that enables you to decide the direction of the supply air. This way you can avoid unwanted draughts.
The extract air valves are mounted in NilAIR supply air boxes that can be installed in the ceiling or wall.