Bay Window. A bay window is a window space projecting outward from the main walls of a building and forming a bay in a room. MPN UPVC and aluminium bay & bow windows expand views and let in more natural light, even in small spaces. Learn more about our product options.

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A-Rated Energy Efficient UPVC Windows, Doors, and Conservatories in Double Glazing or Triple Glazed Glazing get a quote.