Series 8900

Atrium’s premier replacement windows, the Series 8900 boast all the customary features of high-quality windows along with added advantages.

These include a lifetime glass breakage warranty and our exclusive InsulKor™ sash technology, ensuring advanced energy efficiency.

Designed for both style and durability, our Series 8900 conveniently accommodates the nail fin option with an external accessory groove, facilitating easy installation.

Plus, it comes with a transferable limited lifetime warranty for added peace of mind.

Features & Benefits

  • Black exterior available
  • Choice of double-hung, slider, or picture window styles
  • Top and bottom sashes tilt in for easy cleaning
  • Simulated divided lites (grids on the outside) available
  • InsulKor™ sash reinforcement
  • Transferable, limited lifetime warranty
  • 25-year glass breakage warranty


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Limitless Grid Options Available

Energy Efficient Glass Options

Atrium windows and doors come with the latest glass technology, offering excellent thermal efficiency. They offer a variety of glass options and unique insulated spacers, ensuring there's a glass package suitable for any climate or budget. It's important to check the product details before making a purchase.

  • Low-E Glass

    Low-E glass is coated with a microscopic layer of silver that reflects radiant solar energy while permitting visible light to pass through the glass, providing more comfort and lower energy costs.

  • Low-E Glass And Argon Gas

    Argon gas works like an insulating blanket between two panes of glass to further improve thermal efficiency and decrease outside sound levels.

  • Ultra Low-E Glass And Argon Gas

    Choose our ultimate glass package for optimal energy efficiency and maximum cost savings. Ultra Low-E glass offers three invisible layers of silver coating in addition to the superior thermal performance of argon gas.