|Without the bottom sill,
water and dust can break in easily
| Various Performance are Maintained.
Provided with bottom sill to prevent water and dust
|FUNTIONAL BENEFIT||ECONOMICAL BENEFIT||ENVIRONMENTAL BENEFIT||SECURITY BENEFIT|
|Enable to get fresh air while door is closed and prevent damage from hitting by the strong wind.||Make efficient small space of room for no need to use many various type of windows. Competitive price||No need extra energy for exhaust fan and lighting by open the vertical sliding window. Used for both ventilation and door way.||ASTM E 330
When Nature Comes Through Your Door