Окно из алюминиевого сплава FP90S, открывающееся внутрь (очень узкий плоский проем)

The FP90S has the advantages ofnarrow frame and flush design,presenting an integrated effect. it supports customization of variousopeningmethods and colors. The frame has thermal insulation, and thehardware can be customized. it also has good perfommancein airtightness, water tightness, wind load resistance, and acoustic perfor-mance.