Energy costs are currently at an all time high, and are expected to keep increasing. This is bad news for schools, government offices, and companies with fixed operating budgets. That’s why it’s so important for them to find ways to improve their energy efficiency.
National Custom Hollow Metal currently manufactures several premium products, including stainless steel, galvanneal, and lead-lined doors and frames. We also now offer Sound Transmission Control (STC doors) that can reduce noise pollution, and Ballistic doors that are capable of stopping a .44 magnum round. But every year DefendDoor custom hollow metal doors and frames continue to be our most popular product line, for many great reasons.
