The standard steel door is always a great choice for medium to high frequency areas. They can be insulated, fire rated or can have a window cut into them. Accoustic doors are great for areas where sound quality matters. They combine great sound transmission loss with the look of a normal metal door. Blast resistance and air pressure resistance make these doors one of the best choices for safety. Working in a high security area can be dangerous and bullet resistant doors are there to help make it safer. Bullet resistant glazing can be added to keep your doors looking their best. Perfect for separating the inside from the outside. Stainless steel doors don�t readily corrode, rust, or stain when exposed to the elements. This allows them to keep looking great long after their installation. For extra protection with great style, embossed steel doors are a great choice. When kicked, steel doors will withstand the impact and continue to stand .