Cornell Commercial Rolling Doors and Security Grilles Blog

From markings on clay tablets to UV printing and everything in between. Discover what printing looked liked in the B.C era and how it has evolved today.

Creative thinking and teamwork yield impressive results for The Metal Shutter House in NYC.

In the overhead door industry, we know that rolling fire steel doors not only provide security, but also serve as the front line of fire protection designed to prevent the migration of fire and smoke throughout a building. We’re also aware that these closures will only respond to a fire event as planned if one annual activity takes place: periodic fire door inspection and drop testing. Learn more about the changes coming to NFPA 80 in this blog.

Learn more about StoreDefender™ for the cannabis industry in our latest application sheet.

In cafeterias, stadiums, hospitality, healthcare, and educational facilities, specifying a counter door that not only offers a compact, streamlined option but also includes insulation to reduce operational noise is key. There are many counter door options on the market, but one is the only and first of its kind with a patented PVC back slat to hold the melamine foam insulation in place within the curtain. Our Insulated Roll Up Counter Door is a unique solution with a Sound Transmission Class (STC) rating of 26.

Have you worked on projects that called for doors or grilles that had specific wind load requirements? If you answered “yes,” you’re probably familiar with some of the basics, such as the difference between design and test wind load and how wind load is calculated. While understanding the basics is helpful, it is also beneficial to be aware of myths surrounding wind load requirements for rolling doors and grilles.

If you’ve ever specified or installed a rolling door or grille, you’ve also encountered the term “wind load.” You probably know the wind load requirements for the doors in your facility. You know why wind load requirements are important, but may not be sure on the specifics. Not to worry, we’ll give an overview in this blog post to help.

When thinking about wind and grilles, maybe you’re picturing a piece of swiss cheese in all its hole-y glory: the wind comes in, goes through the holes, and is done, without damage or any other considerations needed. This metaphor couldn’t be more wrong. Instead, wind and grilles are more of a melty mozzarella situation: grilles catch things and don’t want to let go. In the case of the cheese, pepperoni or errant pieces of basil may get caught up. For the grille, air itself can be an issue if the grille isn’t wind loaded. Wind gusts can build in any area and negatively affect security grilles.

Does the hood mount to the header? Is there enough room to add additional supports given the amount of steel already above a typical opening?