reviewed several companies, decided to go with durabuilt and have been very disappointed, poor seals, poor closures,2 windows ended up being permanently closed and locked but still chilly, frost buildup around a couple of windows, one cracked and needs replacing this spring, screens fit poorly and bugs get in, forgot to give us enough cranks, list goes on ... framer was meticulous and house is square, outstanding issues primarily with openers and screen fittings, extremely poor service with screen replacement etc., said they'd call - once they had the contract and the money, they were on to the next ... likely need to replace at least 4 windows at our own cost for comfort