Alpha Channel: No, Looped Video: No, Frame Rate: 25, Resolution: 3840x2160, Video Encoding: Photo JPEG, File Size: 1.24GB, Number of Clips: 1, Total Clip(s) Length: 0:21, Individual Clip Lengths: 0:21, Source Audio: No, Setting: Indoors

Autoclaved aerated concrete (AAC), also known as autoclaved cellular concrete (ACC), autoclaved lightweight concrete (ALC), autoclaved concrete, cellular concrete, porous concrete, Aircrete, Hebel Block, and Ytong is a lightweight, precast, Foam concrete building material invented in the mid-1920s that simultaneously provides structure, insulation, and fire- and mold-resistance. AAC products include blocks, wall panels, floor and roof panels, cladding (facade) panels and lintels.