Insul-TEC 500 Double-Hung Window – New Construction Ready
The Insul-TEC 500 double-hung window, manufactured by OKNA and offered by SEVEN SUN, is a go-to choice for new construction and additions across Connecticut and Western Massachusetts. With classic styling, excellent energy performance, and nail-fin installation compatibility, it’s ideal for homeowners, contractors, and builders who want long-term value and clean, traditional lines. Request a FAST Free Quote today and get the right double-hung window for your project.
A Classic Look with Modern Performance
With independently operating top and bottom sashes, this window brings timeless style and everyday functionality to new builds. The 500 model is perfect for bedrooms, bathrooms, and family spaces where ventilation and reliability matter most.
Nail Fin Ready for Framing Integration
The Insul-TEC 500 is designed for new construction installation with a factory-applied nail flange that integrates directly into the home’s exterior wall sheathing. It’s easy for contractors to install and ensures lasting structural stability.
Energy Efficiency at an Accessible Price
Don’t let the value price tag fool you — this OKNA window is ENERGY STAR® certified, with multi-chambered uPVC frames, Low-E glass, and argon gas-filled units. It delivers excellent thermal performance and weather protection for four-season climates.
Installed or Supplied by SEVEN SUN
Whether you’re building a home, managing a job site, or coordinating a self-managed addition, SEVEN SUN can deliver. We offer both installation and supply-only options tailored to your timeline, crew, and preferences. Get your FAST Free Quote now and let’s keep your project moving.
Double-Hung DH 5500 Series
Superior THERMAL PERFORMANCE For Energy Savings.
- All windows manufactured with an integral nailing flange for easy installation.
- Optional J-Channel available to aid in finishing siding exteriors.
- Optional Wood Extension Jambs for 2 x 4 and 2 x 6 stud walls. Eliminates drywall return method.
- Maintenance free rigid multi-chamber vinyl profile.
- Full 3¼” Depth Welded Mainframe with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface resulting in superior strength and years of long lasting performance.
- Fusion welded beveled frame and sash for superior strength and durability.
- Dual heavy duty cam-type lock and keeper on windows over 24 inches width for added security.
- One piece sloped sill for proper water drainage.
- Tilt-In sashes function with recessed spring-loaded tilt latches making cleaning effortless, safe and easy.
- Fiberglass mesh standard on all double hung windows.
- Full integral interlock with double weatherstripping.
- Heavy gauge, fully extruded lift rail.
- Power Lift™ balance system ensures easy operation, never needs adjusting and has covers to enhance air tightness and add a pleasing appearance.
- Heatseal® warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window.
- Optional locking screen provides an additional safety measure.*
- Radius edges on interior of each sash create a soft feel.
Full 3 1/4″ depth welded mainframe with beveled colonial exterior features curves that are not only beautiful, but also allow for maximum weld surface resulting in strength and years of long-lasting performance.
Standard sash lock with tamper-resistant cam ensures a much smoother turn, and increases the life cycle over traditional locks.
Push button spring-loaded vent latches allow both window and sashes to remain partially open for ventilation.
The sill dam wall is mortised into the jamb adding strength and lowering the possibility of leaks.
The 500 series offers a fully integrated lift rail giving the window a nice, contemporary look.
Optional foam-filled insulated extrusions add energy efficiency; deluxe version only.
(Insulation type may vary during the manufacturing process.)
WOCD latches available as an optional upgrade. WOCDs add an extra level of safety for you and your family. When activated, the device will allow the window to be opened no more than 4 inches. If you would like to open the window fully, you can deactivate the device and when you close the window the device automatically reactivates.
Available in White and Almond.
Interior Options
Our company offers an optional Almond colored vinyl in addition to our standard Euro-White to give your home a distinct look. All options, besides Euro-White, are available at an additional charge.
Euro White
Almond
Exterior Options
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)
Almond (Standard on Solid Almond Windows)
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.
Flat Grid
Contour Grid
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.
Colonial
Prairie
Diamond (Not available with SDL Grids)
Specialty Glass Options
OKNA Windows offers specialty glass in a variety of distinctive choices that add visual interest to any design while offering variability in light control. Our Regular Obscure glass for example, will be satifying to those looking for a more traditional look with obscure glass. This option is great for bathroom windows. Other available glass options are tempered, laminated, and custom configuration. 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 improved visibility screen. This product does for windows and doors what high-definition technology has done for television viewing; it improves the view by making it sharper and more vivid.
Industry Standard Screen
ThruVision PLUS®Standard on all Enviro Star Windows
ThruVision PLUS®
The Insul-TEC 500 window is a smart choice for anyone building new who values quality, appearance, and cost-efficiency. It blends traditional design with durable performance and works beautifully across a variety of home styles.
SEVEN SUN is proud to install and supply OKNA new construction windows across Connecticut and Western Massachusetts. Reach out today for a FAST Free Quote and we’ll help you select the perfect windows for your new home or addition.