Karvan-Glass specialists carry out the vitrification of balconies and sunrooms using sliding aluminum and swing vinyl systems. If you plan a balcony vitrification, we suggest to select the profile (aluminum or vinyl), which requires comparing advantages of applied profile systems. Sliding aluminum systems represent the following advantages: practicability and usability; saving internal space; low weight; long life; affordable price. Swing vinyl systems represent the following advantages: high noise insulation; good heat insulation; long life; swing flaps ensure easy maintenance.