High-Temperature Round Duct Access Doors - China Suppliers & Factory, Up to 2300°F, Easy Installation

Introducing our top-quality ceramic fiber gasket, engineered for exceptional performance in high-temperature applications, reaching up to 2300°F. This product features a user-friendly self-adhesive template, eliminating the need for complex measurements during installation. Constructed with a durable 16 GA black iron backing plate, the smooth interior ensures optimal airflow, Designed without a frame for easy installation and sealing, our circular doors allow for effortless opening and closing without the requirement of special tools. The two layers of metal within the door are securely spot-welded at the rim, providing enhanced stability. Additionally, the smooth inner surface minimizes friction, ensuring longevity, Our zinc-coated wing nuts are designed for easy hand operation, removing the need for wrenches. Suitable for low, medium, and high-pressure applications, our doors are available in galvanized finishes. Locking nuts are included to prevent the separation of inner and outer panels, Perfect for both spiral and straight-seamed ducts, these doors are ideal for anyone searching for reliable solutions. Easy on-site fixes require no sealant or additional fixings, making this product a must-have for your needs. As a trusted China factory supplier, we pride ourselves on delivering high-quality products that meet industry standards