Enviro-Star 800 Series

With the EnviroStar window OKNA provides a breakthrough window product, which offers a variety of glass and structural options that seamlessly blend with any décor while assuring exceptional energy efficiency. This window is characterized by extremely low air infiltration rating, which can considerably lower energy consumption of typical home in Connecticut. This unique characteristics, combined with the energy saving glass package, offers superior thermal performance and EXCEEDS the most stringent ENERGY STAR requirements.

With the EnviroStar window, you will enjoy a classically refined traditional wood window look without most of the maintenance and responsibilities.

Features and Benefits of OKNA 800 Series Double-Hung Window

  1. Fully welded frame and sash with exceptional thermal efficiency and outstanding strength
  2. Optional insulation-filled frame and sash for added energy efficiency
  3. Insulated extra or double-strength glass for increased strength and outside noise dampening
  4. HeatSeal Glass System offers thermal efficiency for fuel cost savings in any season
  5. Power Lift Balance System allows smooth window operation
  6. Full interlock with quad weather-stripping provides low air infiltration for increased comfort
  7. One-piece sloped sill helps eliminate clogged and frozen weep holes as well as reduce air infiltration and chimney effects
  8. HeatSeal Warm Edge Spacer System for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window
  9. Available in Replacement and New Construction applications
  10. Magnetic Seals similar to those in the refrigerators, dramatically reduce drafts and greatly improve thermal performance of the windows.
 
The elegant, beveled profile of the 800 Series will enhance the beauty of your home’s exterior by giving it the traditional look and feel of wood windows with the performance and ease of maintenance you can only get with vinyl windows. The 800 Series can also be painted to match any exterior.
 
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 offer 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.
 
The 800 Series was designed to authentically represent a traditional wood window. The smallest details, such as the rounded beveled edges of the glazing bead, are a nod to the classic.
 
A one piece sloped sill allows for proper water drainage without leaks.
 
The sill dam wall is mortised into the jamb adding strength and lowering the possibility of leaks that may occur at corner seals.
 
The Bulb Gasket Seal improves thermal performance, lowers drafts and provides better acoustic insulation. Dual weather-stripping significantly decreases drafts and air infiltration, and balance covers hide the balance mechanism lending a pleasant streamlined appearance to the window.
 
Additional high density composite reinforcement (shown in blue) inside the upper part of the sash make Enviro Star windows structurally stronger than others available on the market.
 
Magnetic Seals (shown in light blue), similar to those used in refrigerators, dramatically reduce drafts and greatly improve the thermal performance of Enviro Star windows.