@Cindy Bolen we are using Windsors here in Salt Lake. they are VERY popular and used widely in the hot dry valleu and the harsher canyons (park city). why? im guessing the climate here is better suited, not as humid. they came highly recommended and we also considered marvins and vinyl kolbes. if i lived in a more humid environment i may have considered the kolbes… but with the local distributor being one of windsors top/largest markets, and having a great relationship with them and our builder, we felt wise in our decision.

I hopefully have copied down the right specs for a double hung window Air Resistance: 0.086 cu. ft./min/joint ft. Wind Pressure; 300 pascals 6.3 psf Wind Resistance: 205 mph (330 kph) forced Entry: Level 40 = 300 lb From the website: Multi-chambered design reduces exterior noise, adds insulation and strength and provides thermal efficiency. Multiple weather-stripping provides outstanding protection against the elements.Up to 5 weatherstrips help reduce heating and cooling costs. Screen channel designed for screen removal from inside your home.Half screen and full screen are available. Welded frame and sash corners provide strength and protection against air and water infiltration. Snap-in interior glazing bead allows easy replacement of glass from the inside Double-walled sash design for superior strength. Unique sloped sill on double hung evacuates the heaviest rains much like a wood window sill and keeps bugs out. Provision to add windbreak to cut down on air infiltration. Extra thick wall design for improved rigidity. Provision to add windbreak to cut down on air infiltration. Interior groove allows the addition of mouldings such as 3/4" wood and 1/2" drywall return or all u-PVC jamb extension. Provision for installation brackets. Tilt option available for easy cleaning New Ostaco "No See Um" screen is available. As far as the glass I can't see on the website the R and U or solar heat but I did read that at -20 F it will be 52F on the surface of the glass and at 20F it will be 61F on the surface. Hopefully this helps people who understand more of this lingo and if they are good quality. Thanks

LLC raises an eyebrow? First, ignore that kind of comment. An LLC is a legal corporation and no reason for you to imply they are dishonest for being as such. Now, on to the topic. Check the performance of each window. Not the price, the performance and construction will tell you which is the best value. There are much better windows made than what you see adverstised or at Home Depot. Trust me...there are! Advertising is expensive. Some choose to build a quality product and sell it through a distribution or a network of quality dealers instead of using national television to convince you they make quality products. I distribute one of the highest quality wood windows made in America, made on the east coast, and you'll never, ever see them advertised except through our authorized dealer network. Yet, that company has over 40% of the historical restoration window business on the east coast. So, don't buy expensive advertising. Spend your money on value and quality. Shop carefully, compare and then decide. I did some research on WT. They make windows for million dollar plus homes. Been in business since 1949, and looks like they are far superior to the brands you see advertised. They offer the best thermally efficient casement window in the business!! If you can afford them, buy them! Study that window closely and you'll be convinced it's much better than the nationally advertised windows. Oh, again, an LLC is not a reason to "raise an eyebrow". Nonsense! Michael

Don't know who you think you are Krypton but I just shared my experience because my friend is looking to purchase windows and told me about this sight.He likes our windows (Crystal Pacific) and he started his own research.It doesn't matter to me what windows you like but we like ours.