Curtain Wall Back Pans 

The primary use of curtain wall back pans is in the building cladding system, where they are installed at the backside of the spandrel glass and opaque areas. In some applications, back pans are placed behind metal cladding panels.

Curtain Wall Back pans provide excellent thermal and moisture protection while being fire retardant and sound-absorbing.

Curtain Wall Back Pans Advantage

Curtain wall back pans provide thermal and moisture protection.

Back Pans Applications

In curtain wall systems, back pans are installed behind opaque sections of the wall.

Curtain Wall Back Pans Specifications

  • Galvanized steel sheet thickness can be 20, 22, or 24 gauge (0.040”, 0.034”, 0.028”, respectively)
  • Curtain Wall Back Pan depth from 3/4“to 8”
  • Typically, the insulation material is semi-rigid mineral wool
  • Insulation is held in place with cup head weld pins (±2 p/sq.ft)
  • All corners are tabbed, spot-welded, and sealed
  • Insulation material: ROCKWOOL CURTAINROCK® series for insulation. These products are stone wool insulation boards designed for a variety of curtain wall systems. CURTAINROCK® is non-combustible and fire-resistant. It will not develop toxic smoke or promote flame spread when exposed directly to fire. CURTAINROCK® Series 40 and 80 features ROCKWOOL ROXUL SAFE™, which provides a comprehensive fire-stopping system that has been UL/ULC/Intertek tested and approved for perimeter fire containment systems. This insulation material has excellent acoustic properties and is dimensionally stable – maintaining thermal performance over its lifetime, even in rising and falling temperatures.


PROFELEZ fabricates various curtain wall back pans in different shapes and sizes based on your requirements and the cladding system.

The factors that affect the design and shape of back pans are: ​

  • The material used for production (aluminum or galvanized steel)
  • Material thickness
  • Insulation material (usually mineral wool)
  • Quantity of welded stiffeners used. Large back pans are generally reinforced with stiffeners to increase their stability
  • Panel depth (ranging from 3/4″ to 8″)