EnviroStar 800 Double-Hung Windows – Beauty, Performance, & Precision
The EnviroStar 800, manufactured by OKNA and installed by SEVEN SUN, is the window we proudly recommend most — and for good reason. With its exceptional energy efficiency, industry-best airtight performance, and stunning hardware details, it’s the ideal double-hung window for homeowners across Connecticut and Western Massachusetts. This is our best-selling double-hung model at SEVEN SUN — and the one many of our team members would choose for their own homes. Request your FAST Free Quote today and discover what makes the EnviroStar 800 so special.
Designed to Be Seen – Beautiful Inside and Out
With its clean frame lines, symmetrical proportions, and elegant metal lift handles, the EnviroStar 800 is a statement piece for any home. It blends seamlessly with classic or modern exteriors — and looks just as refined from the inside. Available in multiple interior and exterior finishes to match your style.
The Most Airtight Double-Hung Window Available Today
This window is engineered for maximum air-sealing, giving it a performance rating that leads the industry. Built with triple weatherstripping, compression seals, and multi-chambered uPVC frames, the 800 minimizes drafts and reduces your energy bills all year long.
Energy Efficiency That Goes Beyond the Label
The EnviroStar 800 doesn’t just meet ENERGY STAR® standards — it exceeds them. Choose from dual- or triple-pane glass packages with advanced Low-E coatings and argon gas fills for serious thermal protection. It’s the kind of window that performs in harsh New England winters without compromise.
Engineered by OKNA. Installed by SEVEN SUN.
The 800 series is built by OKNA, one of the most respected names in the window industry — and it’s installed by the trusted local team at SEVEN SUN. We offer full-service installation or supply-only delivery, along with design guidance and support every step of the way.
The elegant, beveled profile of the 800 series will enhance
the beauty of your home’s exterior.
Enviro-Star 800 Series offers traditional look and feel of wood with the performance and ease of maintenance you can only get with vinyl windows.
The smallest details, such as the rounded beveled edges of the glazing bead, are a nod to the classic.
Enviro-Star 800 was designed to authentically represent a traditional wood window.
- Maintenance free rigid multi-chamber vinyl profile.
- Full 3 1/4″ depth uPVC fusion welded frame and sashes with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface strength and years of long-lasting performance.
- HeatSeal warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window.
- Full integral interlock with double weather-stripping.
- A variety of hardware options fits harmoniously into any decor.
- Fiberglass mesh half screens standard on all windows.
- Optional locking screen provides an additional safety measure.
- Available in replacement applications.
The classically refined line of the 800 series brings to mind a traditional wood window without most of the maintenance responsibilities.
A streamlined design, packed with a variety of features makes this window a sophisticated choice. The 800 series offers hardware options reminiscent of classic wood windows. It is the only vinyl window we manufacture without an integrated lift rail. The double hung features a handle style based on traditional wood windows. Recessed vent and tilt latches give the window a streamlined appearance as well as making clean-up a breeze. The reveal of the top sash at the meeting rails is a distinguishing mark of the 800 series, drawing inspiration from classic wood windows.
Interior Colors
Our company offers five beautiful interior laminates in addition to the standard Euro-White to match any decor and style.
All options, besides Euro-White, are available at an additional charge.
Euro-White (Standard)
Natural (Optional)
Winchester (Optional)
Cognac (Optional)
Melrose Cherry (Optional)
Dark Oak (Optional)
Exterior Colors
OKNA Windows offers seven exterior stock color selections in addition to the standard Euro-White option to give your house a distinct look and enhance its curb appeal. You can also select custom exterior colors from a virtually unlimited selection of paints. Our paints are environmentally safe and durable, giving your exterior a vibrant and long-lasting color finish.
Exterior colors other than Euro-White must have full screen. All options, besides Euro-White, are available at an additional charge.
Almond (Optional)
Sandstone (Optional*)
Terra Brown (Optional*)
Cocoa (Optional)
Basic Brown (Optional*)
Bronze (Optional)
Nicol’s Black (Optional*)
Custom Colors (Optional)
Hardware
To create a style and finish that reflects your unique taste, our hardware is designed to harmonize with our different window styles and decor ideas.
Euro-White (Standard)
Adobe Gray (Standard on Laminates)
Antique Brass (Optional)
Brushed Nickel (Optional)
Matte Bronze (Optional)
Grids
GBG grilles consist of aluminum bars sealed in the insulation airspace between the two panes of glass. Because the interior and exterior glass surfaces are not affected, cleaning your windows is a much easier task.
Permanent interior and exterior grids with spacer will provide a truly authentic look. Interior grids are available in Euro-White or wood laminates to match your home’s decor. External grids are available in Euro-White or colors to match product exterior.
Flat Grid
Contour Grid
SDL Grid
Grid Patterns
Are you looking for a stunning design detail to instantly set your home apart both inside and out? A choice of decorative grilles for your OKNA Windows & Doors can highlight the architectural style that speaks to you.
Colonial
Prairie
Diamond (Not available with SDL Grids)
Glass Options
OKNA Windows offers textured glass in a variety of distinctive choices that add visual interest to any design while offering variability in light control. With a range of options at your fingertips, you can find a standard glass texture for virtually every application and aesthetic, from traditional to modern.
Regular Obscure
Screens
OKNA Windows offers factory-installed half screen with heavy-duty handle. Screens are removable from the inside for convenient storage. We also offer ThruVision Screens improving view thru the window protecting interior from insects and allowing perfect ventilation. ThruVision Plus is our fiberglass visibility screen that improves the view by making it sharper and more vivid.
ThruVision PLUS®
Industry Standard Screen
If you’re looking for a double-hung window that checks every box — energy performance, timeless design, smooth function, and long-term reliability — the EnviroStar 800 is the clear standout. It’s a customer favorite for a reason.
At SEVEN SUN, we know windows — and we trust this one. Request a FAST Free Quote today and let’s get you the window that sets the standard for quality.