Replacement Windows

OKNA Windows & Doors Mfg. has manufactured an industry reputation since 1994.
Combining state of art the equipment, modern technologies and dedicating craftsmanship, we have earned a valuable position in the field of home improvement and building products. Our name has become synonymous with innovation, quality and performance. With modern automated equipment, computer controlled production lines, our state-of-the-art methods ensure a high standard of quality control as well as the ability to meet large volume requirements at surprisingly affordable prices. Whether you are remodeling an existing home or building a new one, OKNA is sure to meet your individual needs and personal style.

In January of 1997 OKNA Windows Corp. became a customer of Royal Group Technologies, a world leader in modern PVC processing and design as well as the largest custom PVC extruder for the North American construction industry. The profiles of Royal’s frames and sashes are made of warranted vinyl replacement windows that will never crack, warp, corrode or blister.

In January of 2002 OKNA Windows Corp. partnered with TruSeal Technologies, Inc. the largest producer of flexible insulating glass spacers in the world, and stared using DuraSealTM a versatile, flexible spacer system. DuraSealTM takes optimum advantage of laminates and adhesives to decreasethermal conductivity while improving surface and corner appearance over other flexible spacers. This multi-layered spacer system featuring specialized components results in superior window performance and aesthetics over other warm edge spacers. It is designed to work with T.A.P.E. (Totally Automated Production Equipment) from Besten, Inc., which produces one of the uppermost quality insulated glass units (IGUs) available on the market.

All OKNA products were tested in an independent testing facility, for Energy Efficiency, and to insure that all of our system hardware is capable of withstanding the harshest conditions and abuse that your window or door may experience. As a result, OKNA products deliver absolute performance backed by an outstanding warranty to demonstrate our commitment and trust in OKNA vinyl Windows and doors.

OKNA B800 Plus
The Wide-Body Basement Window
The OKNA B800 Plus is the latest innovation in new construction basement windows. It ads value far beyond its cost. The OKNA B800 Plus differs from conventional basement windows in that it is manufactured on an 8 inch fully injected mould frame. The "wide-body" frame makes for easier installation in a block and poured wall foundation and it minimizes finishing.

The OKNA B800 Plus never needs painting, will not rust, rot, shrink, or warp. Its solid vinyl fusion construction eliminates water or air leaks found in most windows. The 3/4" insulated glass and heavy-duty weatherstripping gives optimum energy performance reducing heating and air conditioning costs; making the OKNA B800 Plus clearly the best basement window that money can buy.

Standard Window
typical window in standard framing for 8-inch block foundation

OKNA B800 Plus
"wide-body" fits flush in block foundation; minimizing framing & finishing time

Improved Condensation Resistance
DuraSeal increases the edge of glass temperature as much as 10% over U-channel roll formed metal spacer making windows warmer

Less Conductivity
DuraSeal saves energy by insulating the frame and edge of glass 50% better than U-channel rolled form spacers and 90% better than aluminum spacer bar.

Reduced Total Window U-Value
DuraSeal can handle the total window U-Factor by up to 3% compared to U-channel roll formed metal spacer and up to 6% compared to aluminum spacer bar. This percentage can be the difference in meeting Energy Star requirements

Superior Argon Gas Retention
DuraSeal's proven argon retention adhesive has been used in over 100 million insulating glass units. Minimal gas loss occurs after exposure to CGSB, ASTM, DIN or CEN seal durability tests. Reguardless of how gas retention is evaluated, DuraSeal retains argon, thereby maintaining the thermal properties of windows long term.

Continuous Moisture Vapor Barrier
DuraSeal's impermeable continuous foil laminate barrier eliminates any short circuit at hotched corners and has a consistent moisture vapor transmission path (MVP).

Durability Performance Testing
Rigerous testing proves that DuraSeal can maintain excellent adhesion in hot or cold climates. Tested extensively in thousands of extreme freeze thaw cycles, a year in a hot humid environment or combined with intense UV, DuraSeal exceeds the challenges of every major Durability test in North America:

• Ecoshere Variable Climate Test (French Norm NF P78-471)

• ASTM E774 level CBA

• CAN/CGBS 12.8-97

• Long term cycling temperature with high humidity

• Long term continuous high temperature with high humidity

• Long term ASTM E-6 P1 1976

Royal Group Technologies TruSeal Technologies, Inc. Besten Inc.