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Frequently Asked Questions

Dynamic has been making the world's finest closures and grilles for quite some time, and over the course of the years we have come to anticipate what our customers are looking for - before they even think to ask! We have compiled a list of the most Frequently Asked Questions about our Rolling products. If by chance we have missed something, or if you would like a certain point more fully explained, simply use our handy Contact Us form to drop us note.

Q. There are terms such as rolling grilles, coiling grilles, overhead grilles, roll-up grilles, which is correct?
A. All of the above!
Q. What is the maximum width for a rolling grille or closure?
A. Depending on the model, it could go as wide as 40 feet. The difficulty is two fold. One is from the limitations on freight the other is the problems of installation of the grille. Many LTL carriers today use PUP’s that can only take freight up to 26 foot 6 inches maximum length. A special truck to take longer lengths can costs thousands of dollars extra. Since we are talking about thousands of dollars extra costs, installation on this size rolling grille is extremely difficult and takes a very experienced crew. This size opening is no problem for side folding grilles and should be at least considered.
Q. What is the maximum height?
A. Standard height is between 8 feet to 14 feet, but we have built grilles as high as 20 feet. Models and total size will dictate if a grille can be built oversized.
Q. Are the large curtains motor operated?
A. Always. Motor operation provides easy and convenient control no matter what the size is. There are cost factors up front and the motors require space either to the side, top or front of the coil.
Q. Do you use motors on smaller openings?
A. Yes, if the situation calls for it. One example, locking for rolling grilles is located in the bottom bar. To meet ADA recommendations a motorized grille with a lock brake operated by a keys witch takes away the need for locking on the floor.
Q. Is there any other method of operating a rolling grille besides manual push up or electric motor?
A. Yes, another choice is an awning crank with a removable rod. The hook protrudes a few inches from the ceiling. The cranks are slow and somewhat tedious to use on full size rolling grilles. Cranks are a better option for Mini Roll-Up shutters.
Q. What is the headroom requirement?
A. Headroom can vary from 15 to 24 inches depending on the height of the grille (See details). Mini Roll-Ups can fit into a space as small as 6 inches.
Q. What can I do if I find an obstruction above the ceiling?
A. If you are lucky and the obstruction is running parallel, you can try using "High lift" like sectional doors do, this will add to your curtain size and therefore your cost. If the obstruction is perpendicular you will need to move it or think side folding!
Q. Do rolling grilles or closures require side room?
A. Yes. If the grille is mounted on 3" tubes it will require 11" total, 5 1/2" each side for the tubes and guides; 4" tubes require 13" total, 6 1/2" each side for the tube and guides. Remember motor location can change your clearances as well.
Q. How small can I make the slot in the ceiling for the curtain to drop down from? Seems 2" to 3" should do?
A. You will always need a minimum slot of 6 inches. On curtains over 24 feet we require 7 inches.
Q. Should rolling grilles and closures have a ceiling access panel?
A. At least one, but two is better and a complete removable soffit is best. One true drawback to rolling products is not with the product, but how all the mechanisms are literally sealed away above the ceiling by the GC. This can make for difficult and expensive service calls so access panels are a smart way to go.
Q. Can the grilles be master keyed to the building keying system?
A. Yes. We can use Best cylinders and other brands that are easily substituted in place of the factory mortise cylinder for an additional charge.