Strong glass? Lol. Window World doesn’t make their own glass...doesn’t make their own window either, they buy a cheap window from a vendor depending which state it is 🤦🏻♂️
Does this window works fine for the virginia area? Also does it qualify for the energy star tax cut? Would you recommend this over the 6000 series for the Virginia area due to we only have about 3 - 4 cold months in the year