... cover, galvanized steel sheet as inside cover, with EPS in core. Common panel thickness 30mm, 40mm,Model ... Aluminum sheet as inside and outside cover, with EPS foam in core. Common thickness 30mm,40mm,Model ... cover, galvanized steel sheet as inside cover,with EPS foam and/or plywood in core. Common panel ... outside cover, plywood as inside cover, with EPS foam in core.Common panel thickness 30mm,40mm,Our ...