The 3-hour UL certified 433 stainless steel fireproof butt hinge is engineered for superior performance in fire-rated door applications. Constructed from high-quality 304 or 316 stainless steel, this hinge provides exceptional durability, corrosion resistance, and strength, making it ideal for harsh environments, including hospitals, commercial buildings, industrial facilities, and coastal areas.
Designed to meet rigorous safety standards, this hinge is UL listed for up to 3-hour fire-rated doors, ensuring reliable function during fire emergencies by maintaining door alignment and integrity under extreme heat. The 433 hinge configuration offers optimal balance between structural support and ease of installation, with a standard size typically used in commercial-grade fire doors.
Precision-crafted with a smooth pivot action, it ensures long-term performance and quiet operation. Suitable for both wood and metal doors and frames, the hinge features pre-drilled holes for quick and secure mounting. Available in satin or polished finishes, it complements a variety of architectural styles while meeting code requirements. Whether made from 304 stainless steel for general applications or 316 stainless steel for enhanced corrosion resistance, this fireproof butt hinge is an essential component in life safety and fire protection door systems.
