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Custom Windows & Doors

Custom Windows and Doors for Every Room and Style

In addition to fine cabinetry, Riverhead Building Supply Design Showroom of Long Island and Rhode Island offers custom windows and doors from a variety of the most recognized manufacturers in the industry, including Andersen® and Marvin®. Both companies offer custom sizing and a variety of options for grilles, glazing and hardware that will complement an endless variety of architectural styles and personal preferences. View our portfolio and then envision how our products could beautifully transform the interior and exterior look and feel of your home.

We are Long Island and Rhode Island's premier source for custom doors and windows. To inquire about Riverhead Building Supply Design Showroom and creating the home of your dreams, contact us or visit one of our showrooms today.