Upvc 4 Panel Sliding Patio Doors are attractive, practical and affordable home improvement. They are versatile and occupy less room space than hinged doors. These doors provide a large doorway making it easier for carrying large items in and out of your property. They have no swinging hinges & instead operate by sliding upon a rail with Patio door rollers making an expansive width. Upvc 4 Panel Sliding Patio Doors is available in different styles bi-folding, sliding to match the look of your property.