Marble granite honeycomb panels are composite wall panels made up of a thin natural marble granite veneer reinforced with an aluminum honeycomb backing combining the aerospace technology. Material composition Face material Natural stone veneer Substrate panel Aluminum sheet or fiber glass sheet aluminum honeycomb Face material 4 6mm natural stone veneer Natural Stone Facing Granite, marble, limestone, travertine, slate, onyxÃ? Bottom sheet aluminum honeycomb panel Maximum size 1500 3200 20mm Customized sizes are available. Weight 16-21KG m2