Plastic Windows Thoroughhly Entered OUR LIVES. Many Advantages Apprieded EVERYTHING. After all, it is so important in the Winter in the House to Save Heat. Especially Taking Into Account The Fact that Cost of Comunal Heat Supply Is Always High. Due to the Tightness of the Design of the PVC Windows, They Reliably Protect Us from Winter Cold and Retain Heat in the Room. Plastic Windows are Now Ussed at All Construction sites. Regardless of this, an Apartment Building, A Country Cottage, A Store or Office Space is Built. In Old Buildings During Major Repair, First of All, Wooden Frames Are Changed to Plastic.