The Okna Window

Performance – Value – Strength

Energy Efficient

Feature packed to achieve industry leading insulation.

Keep your heat in during the window and out in the summer with frames packed with insulation, top performing glass, and design focused on keeping out drafts.

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All windows offer a 3rd party measurement called a U-Factor that measures the amount of heat that can pass through that window. The lower the U-Factor the less heat can pass through.

The Okna Window Features a industry leading U-Factor as low as .26 with Double Pane and Triple Pane as Low as .15.

Ease of Use

Featuring a powerful Block and Tackle Balance System, the Okna window opens smoothly on day one and day one thousand. The reinforced frame means that the Okna window will remain free of warping or hourglassing that can plague weaker vinyl windows.

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Performance Grade scores a window on it’s strength, air and water penetration, operability, and structural integrity.

The Okna Window Features a top achievement of PG 50 in its double hung models, Casement and Picture windows perform even better.

Features

Mortised Sill Dam

The sill dam wall is fitted into the jamb, enhancing strength and reducing the risk of leaks.

Tamper-Resistand Metal Locks

The Okna 500 standard sash lock features a tamper-resistant cam. All metal construction provides a much smoother operation and extends the lifespan compared to traditional locks.

Full Depth Welded Frame

The full 3 1/4″ depth welded mainframe with a beveled colonial exterior features elegant curves that enhance its appearance while providing a larger weld surface, ensuring strength and long-lasting performance.