Prof Al LLC offers PVC doors and windows (white and laminated) made from 4-chamber profiles of Bulgarian Altest company’s production. The profiles are designed by Austrian company Greiner Extrudtechnic.

The mentioned profiles achieve good results in heat and sound insulation. They don’t get distorted, rusted, when exploited under high temperatures and humidity, and are resistant to UV rays, don’t absorb water and, in general, are steady to strict changes of weather.