
They typically have a sound reduction rating of 42dB, which indicates the level of sound reduction they can achieve. These doors are made from steel and often have a dense core of mineral wool or other sound-absorbing material to improve their acoustic performance. The doors can be fitted with gaskets and seals to further improve their sound insulation properties. Additionally, the hinges and locks on the doors are designed to minimize the transmission of sound through gaps in the door frame.




















Door Material | Galvanized Steel |
Size | customized per drawing |
Door Panel Thickness | 62mm or 2 1/2" inches |
Frame Depth | standard 120mm or 4 3/4" inches, or customized per drawing |
Door leaf sheet | 22 Ga.-18 Ga.(/1.0/1.2 mm) galvanized steel sheet |
Door frame sheet | 16 Ga.-14 Ga.(1.5mm-2.0mm) galvanized steel sheet |
Accessories | Lock,handle,hinges,door closer,panic bar and other as requested. |
Vision Panel | With or without as requested. |
Frame | knock down / pre-welded, customized... |
CAD Drawing | available before manufacture |
Surface treatment | Powder coated or heat transfer printing with rich wooden color |
Inner filling | Perlite or Insulated rockwool |
Acoustic | STC42 |



With a commitment to excellence, we work closely with our customers to understand their needs and provide them with the best possible products and services. We use only the finest materials and the latest technologies in our production process, and our quality control procedures ensure that each door meets our strict standards for performance, durability, and safety.
At Yongkang Idoor Trading Co., Ltd., we believe that customer satisfaction is the key to our success, and we are dedicated to providing our customers with the highest level of customer service and support. Whether you are looking for a single door or a large-scale project, we are here to help you achieve your goals. Contact us today to learn more about our products and services.
Before production begins, we provide our customers with CAD drawings of their doors, ensuring that every detail is exactly to their specifications. Our skilled and experienced workers take great care in crafting each door to meet the highest standards of craftsmanship and precision.
Our commitment to quality extends to every aspect of our manufacturing process. Our fire-rated steel doors are UL listed, which means they have been tested and approved to meet strict safety standards. This ensures that our customers can trust our doors to provide the safety and security they need.
At Yongkang Idoor Trading Co., Ltd., we are dedicated to providing our customers with the best possible products and services. We use only the finest materials, the latest technologies, and the highest standards of quality control to ensure that every door we produce meets our customers' needs and exceeds their expectations. Contact us today to learn more about how we can help you achieve your goals.
