When the heat’s on, Durablanket® LT keeps it in.

Energy efficiency begins with Durablanket® LT.

Refractory ceramic fiber insulation reinvented.

Cut energy bills up to 25%.

A massive breakthrough in alumino-silicate insulation.

Using advanced proprietary technology, Unifrax is introducing revolutionary energy-saving alumino-silicate insulation: Fiberfrax® Durablanket® LT and Durablanket LT Z. These superior Durablanket products are based on a breakthrough in fiberization technology that delivers refractory ceramic fiber (RCF) products with an unmatched thermal performance by saving energy and reducing carbon emissions.

Durablanket LT and LT Z, with less shot and more fiber pound for pound, offer improved handling for safer and simpler installation, as well as increased durability and tensile strength for longer performance even in the most extreme conditions.

Learn more about Durablanket LT and Durablanket LT Z – the next generation of thermal insulation.




An innovative product that’s easier to handle.

For more than 75 years, Fiberfrax Durablanket products have been known and trusted for their thermal performance, versatility, and handling in a broad range of industries. Now, using Unifrax’s proprietary manufacturing process, Durablanket LT and Durablanket LT Z represent the next generation of RCF products in the Durablanket family. These blankets are made with innovative manufacturing processes that produce a material with a higher fiber index, greater interlocking of fibers, and a reduced shot content – making them easier to form and handle with class-leading tensile strength.

Energy savings and sustainability.

The exceptional insulating characteristics of Durablanket LT and LT Z help companies reduce their energy costs and meet increasingly strict carbon emissions requirements without increasing the amount of insulation required.

Optimal thermal performance.

Our innovative, proprietary technology results in superior insulation properties ­– including 20% lower thermal conductivity, high fiber index, and less shot – allowing for use in high-temperature environments up to 2,450°F.

Significant cost savings.

Durablanket LT and LT Z provide substantial cost savings on raw materials and free up valuable space in furnaces and ovens by reducing the overall insulation lining thickness up to 25% while achieving the same insulation performance as standard RCF blankets.

Are you ready to discover the next generation
of thermal insulation?