400 Series - Precision Weld - Sliding Window - Dual Glazed with ESP

Name: Wonder Windows Buffalo
Rating: 5

The Okna 400 sliding window with the ESP (energy saver package) and double pane glass is another great choice. When thinking about replacing your windows remember Okna guarantees their windows for life.

7% Better than Energy Star® minimum
3000% Better than Air Infiltration protection than Industry Standards!

Dual pane glass
ESP = Energy Savings
Heat Seal warm edge system lowers condensation
High quality all custom window
Schedule a free quote today

					Energy Star	Comparison To
Glazing Option	U-Value	SHGC	VT	CR	Minimum*	Energy Star Minimum
Dual Glazed
With ESP	0.28	0.29	0.53	62	0.30	7% Better

			Industry		Comparison To
	Our Windows		Minimum		Industry Minimum

AAMA Rating		R 35		R 15
Air Infiltration cfm/ft2		0.01		0.3	3000%	Better
Water Penetration mph		59		33	79%	Better
Structural Integrity mph		143		94	52%	Better

See What Our Customers Are Saying!

Joan C. Rochester, NY 5 Stars

I was very pleased with everything. The process went as planned, the windows are awesome (glad I got them in before this weeks very cold weather), and the guys were very good. I was very pleased with everything and would definitely refer folks to you, in fact my daughter and son-in-law are going to be calling to get a quote for springtime of 2015.

Christine S. Fairport, NY 5 Stars

It definitely feels warmer in the upstairs. We are looking at replacing the lower level now and would like another estimate for the remaining windows. We are very excited about being able to open the windows come springtime. The installers were very kind and professional and answered all my annoying questions.

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