Our Alspec double glazed windows are made with the highest quality, modern materials. Originating in Europe & exploding with popularity,. All our windows & doors are manufactured in our Factory in Sydney, using local Australian Glazers for our double glazed glass units. Prestige Plus is proudly certified as Australian Made & Owned. The main characteristic of the products is their strength & durability, being twice as strong some other systems.. To ensure a tight rebate of the sash to the window frame, sealing rubber is used. Sound absorption, high-quality waterproofing and protection against drafts depend on the quality of sealing rubber. Our company offers a wide range of uPVC double glazed windows in recognizable style and design variability. Our products are in demand due to their high quality and their aesthetic characteristics. It is compatible with most types of security systems. Reinforcement inside the frame allows the production of windows of any size and configuration. The smooth surface of the profile was also appreciated by our clients. High-quality profile design can guarantee you 10 years of pleasant window operation.