Most factories can deliver these custom order in two to six weeks, which is usually adequate to satisfy contractors who buy and install them according to architectural plans. This parts of the residential window business is well established, and most lumberyards buy from several different window manufacturers---to ensure sources of supply in case of strikes, plant fires, and so on. How the business is split depends on price and the personality and persuasiveness of the sales reps. And given that prices are usually similar, the sales rep-customer relationship can be quite important.
Arbor gives more choice than just about any other supplier. It offers many variations in 1/8-inch increments---to cater to remodelers who must adjust to many situations. Arbor has even set up a special system on an Internet website. The lumberyard can connect to the website, enter the specs for a window online, and within seconds get a price quote and estimated delivery time.