the weight of a door is a key issue because when the door is in the up position all of the weight of the garage door is on the rollers. The average weight of a basic non-insulated steel 16 x 7 garage door is about 200 to 250 pounds. You could use any type of garage door roller for this type of garage door because it is the lightest of weight and a basic roller that has 5000 cycles made of plastic or metal wheels will do just fine with this type of garage door. What you want to avoid is using these basic rollers for a basic garage door. On a custom carriage house garage door constructed of wood that can weigh up to 1000 pounds. Also a custom aluminum frame Fulvue window garage door can weigh even more because the panels are pretty much entirely glass. If you used a basic metal or plastic roller for a door of this weight then they will surely not last very long. These types of garage doors require a more heavy duty commercial grade roller that can handle the extra weight.

Heavy duty rollers have a lifespan of about 10 to 15,000 cycles.

One cycle is equivalent to the door going up and down one time. Also on a commercial garage door or a residential custom Carriage House door you want the rollers to last a lot longer because replacing them on a regular basis is very difficult and can get expensive. Any commercial grade product will have to be stronger and last longer than any other because of commercial grade usage is more frequent and needs to be more reliable. Any time a garage door is purchased new at a distributor the rollers that come with the hardware box will be sufficient for the door that you are purchasing.

mismatch of roller on a garage door

The only time that you would get a mismatch of roller two door is having them replaced by a technician who does not have the proper rollers for a extra heavy door and would probably use a lower grade roller because that may be all he had at the time. Or a homeowner has replaced rollers himself and did not take into account the weight of his garage door. If you are planning to replace the rollers on your garage door than you will need to keep these factors in mind also determine what kind of garage door you have whether it be basic or custom. And also keep in mind that a garage door that stays open more than it is closed is going to put more weight on the rollers for a longer period of time then a door that is closed more than it is open. Replacing rollers is not that big of an expense so try to get the best quality rollers you can from the garage door company that is going to perform the work.