Roll Top Cabinet Door Hardware - Step-by-step directions for measuring your own face frame cabinets for new cabinet doors. Most cabinet companies want you to provide them the actual door sizes in contrast to the rough openings. Rough openings will be the actual measurements of these rectangular holes in your cabinets that you want to cover with cabinet doors. You'll need to take these dimensions and convert them into door sizes before you purchase. Assess your cabinet openings to find out if they are square. This is readily accomplished by measuring diagonally from corner to corner both ways.
If they aren't, then you may wish to gauge the diameter at the top and bottom and take the larger of the two. Same thing goes for the height, measure height on the left and side and take the larger of the two. You now have the rough opening dimensions. So to make it easier to match your new doors to your existing openings, you might want to make a sketch of your cabinets and number them on paper. This is going to make mounting the new doors much easier, especially if you've got several doors which are near the same size. Now that you've got the rough opening dimensions, what do you do with them?
You finally have to make a determination. How many overlays would you wish to have in your face frame cabinets? Keep in mind how broad are the stiles involving openings? If two doors are side by side and hinge to hinge, they'll either require clearance to swing open without hitting the other door, even if this door is open as well. The amount of clearance is mostly a function of which hinge you're using. Check with your hinge maker to find out how much you want. Most hinges will need anywhere from zero clearance up to a quarter of a inch.
You'll also need to see how much clearance there is between the top of the opening and your countertop or drawer fronts. Check the underside for any decorative moldings that might hit the base of your doors and fix accordingly. Most face frame overlay doors have an overlay in the quarter of an inch to up to three-quarters of the inch. Rarely, you might have overlays outside this range, but they do happen and are usually for just a couple of doors on a classic cabinet. An overlay of one-half inch is possibly the most common, and the one we will use for our examples.
For unmarried openings, that is a opening in your cabinets which will have one door covering the whole opening, take the height and width of the opening and add one inch to the height and width and that is going to provide you a half inch overlay on all four sides. For example, if the rough opening is sixteen inches broad and thirty-two inches tall, you will need a door 5 inches broad and thirty-three inches tall.