Our experts are ready to increase the comfort & value of your home Welcome to See-Thru Windows, Doors & Home Improvements. Serving, Maryland & Virginia, with over 20 years of experience, our experts are ready to help improve the comfort & value of your home. We specialize in beautiful Energy-Star rated replacement windows that have 33% stronger glass, & a Lifetime Warranty. Available in many different styles & sizes including double hung windows that fold down towards you for easy cleaning. Our exceptional doors and home entry systems are made by Paragon Doors. And, they are simply beautiful with a wide variety of options for leaded-glass-style decorative inserts, sidelights, and transoms that add extra light above your door. We also have high-quality and secure sliding doors that have the mini blinds built right in-between the glass so you don'��t have to dust them or repair them ever! Other services: Windows, Bathrooms, Doors, Roofing, Gutter/Guards, Siding, Attic Insulation.