The culmination of 25 years of steel door manufacturing expertise. Engineered to exceed industry standards, the KC ULTRA combines unmatched durability, superior design, and innovative functionality to meet the demands of modern construction. With higher specifications and competitive pricing, it’s the ultimate choice for manufacturers and end-users seeking quality without compromise. Elevate your projects with the KC ULTRA—where strength meets value.
Pre-assembled modular building door with 20 gauge glavanised steel door skins and a 16 gauge face-fix frame. Multiple insulation options, next-generation design features and stainless steel hardware as standard.
Introducing the Kirncroft 10-point locking steel door—the ultimate solution for container-conversion security. With ten robust locking points securing the door and frame, this door delivers unmatched protection. It can be welded directly into a container wall without the hassle of a steel subframe. Expect nothing less than excellence with its superior locking system, thicker steel gauges, built-in anti-racking tolerance, and heavy-duty hardware. After 25 years of in-the-field experience and development, this door stands as the definitive choice for the container industry.
Kirncroft Steel Doors are the number one choice for modular buildings and container conversions worldwide.
Kirncroft is a family-run business with its headquarters in the United Kingdom, specializing in manufacturing and supplying high-quality steel doors for modular buildings and containers. All doors are manufactured in-house at our dedicated facility, ensuring superior quality and attention to detail in every product.