What is the unit of the window?
General works on the number of windows per unit Terminology: Tang, fan
Plastic window is a form of window that is actively promoted by the state in the mid-1990s after the wood, iron and aluminum windows. Because of its low price, performance and price is better, is still widely used. This window is made of polyvinyl chloride (PVC) resin as the main raw material, plus a certain proportion of stabilizers, colorants, fillers, UV absorbers, etc., is the most commonly used window type of modern architecture one.
What The number of windows is the unit of the fan, the area of the window is square meters. For example, the house has four windows. The window area is 2.25 square meters.
The window is a ventilated device on the wall.the best window
