Because there are so many variations on doors, there are many different jobs that can be associated with this industry. The main part of this industry is made up by dealers who sell everything from french or sliding glass doors, to windows. The main person you will likely deal with is the sales rep, who is working on the showroom floor. A sales representative can help walk you through different styles, and can even custom order items if they do not have what you need. For instance, if you need a storm or fireproof front door for your home, the rep should be able to help, or at least guide you towards another company that features these types of additions to guard your entryway. If the dealer has payed wholesale prices for the screen, patio, or even glass shower door, the sales representative may even be able to get you a discount!
Another career available in this industry is that of a craftsperson who specializes in woodworking. For a skilled craftsperson, he or she has spent a lifetime perfecting the craft. Many have served in an apprenticeship when first learning how to design cabinet doors, or custom paneled window shutters. Though they do not work with materials like steel or fiberglass, this person can build you a custom oak door for the front of your home, or any interior or exterior location. They can also install antique locks, knobs and hinges, especially if you are remodeling an older home! What this person can't help with is that new screen or sliding door, though they can build a custom French patio entrance, or closet door!
Finally, you have the garage door technician. This tech has been trained to work with everything, from folding to steel!