Why do you recommend that some blinds be made as 2 blinds on 1 headrail?

There are some size limitations on certain products; this may be due to weight, stress on the working parts of the product, or ease of operation. We recommend that faux wood blinds over 72" wide and wood blinds over 84" wide be split into 2 blinds on one headrail depending on the configuration of the windows or ordered as separate blinds with a common valance. If you want to have a larger blind made as a single unit, you may be able to do so, but it would void the warranty.