heroal door systems are made from recycled aluminium and are durable and energy-efficient. Thanks to their modular construction and variable insulation, thermal insulation values can be flexibly adjusted. The heroal D 72 system achieves Uf values of 1.7 W/m²K and, when combined with suitable glazing, Ud values of up to 0.89 W/m²K. Cradle to Cradle Certified®, along with EPDs and optional low-carbon aluminium, demonstrate sustainability throughout the entire product life cycle and support standards such as DGNB, LEED and BREEAM.