Series 8900 Double Hung
The Series 8900 is Atrium’s premiere double hung window. It features a number of deluxe enhancements made standard, a lifetime glass breakage warranty and our exclusive InsulKor™ sash technology for top-of-the line energy efficiency. Both sashes tilt in for easy cleaning and maintenance. The high-performance vinyl frames wipe clean in no time and optional grids come fixed between the glass panes so they never need cleaning. Our thermally fused, welded vinyl frames are engineered to prevent air, water and noise infiltration.
Where To Buy
Features & Benefits
- Low-E glass with insulating argon gas yields outstanding thermal efficiency
- Exclusive InsulKor™ polyurethane fiberglass enriched sash
- DP 60 rating (window size tested 36” x 74”)
- Lifetime Glass Breakage Warranty ensures the longevity of your windows
- Industry leading .08 cfm/ft air infiltration rating
- Extruded full screen
- 3/4” Constant Force Balance offers incredibly easy sash mobility
- External Accessory Groove accommodates nail fin option
- Transferable, Limited Lifetime Warranty
Recognized as the Most Efﬁcient of ENERGY STAR® in 2023. Learn More
Energy Efficient Glass Options
Atrium windows and doors are engineered with state-of-the-art glass technology to give you outstanding thermal efficiency. With a full range of glass options and special insulated spacers, we have a glass package to fit any climate need or budget. Energy Star compliance available in all Series 8900 windows. Verify product specifics before ordering.
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 eciency 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.
Triple-Pane R-5 Compliant Glass
Triple-pane, R-5 compliant glass with Super Spacer® sealant system provides industry-leading thermal resistance, noise reduction and protection from the sun. The Series 8900 oers this option with both Low-E glass with argon gas or Ultra Low-E glass with argon gas, for the ultimate in insulation.
Additional Glass Options
Double Strength Glass
Vinyl Color Options
Interior Laminate Options
Exterior Paint / Laminate Options
Brick Red (Paint)
Dark Chocolate (Paint)
Hunter Green (Paint)
Device/Monitor screen settings may affect color shown. Please refer to actual window sample when selecting colors. Interior and exterior laminates available on white window only. Only use mild, water based household cleaner on painted product and rinse immediately with water. See full cleaning instructions for details. Grid offering limited to 5/8” contoured or SDL on exterior painted windows.
Available Grid Patterns
Colonial Top Sash Only
Vertical Top Sash Only
Diamond Top Sash Only
Prairie Top Sash Only
Perimeter Prairie (DH)
Available Grid Types
1-Inch Contoured Grid
3/4-Inch Flat Grid
5/8-Inch Contoured Grid
5/8-Inch Flat Grid
Simulated Divided Lites (SDL) Grid