AM Plester AM 81 50kg 1pc The AM 81 model is available as a single unit and comes in an Abu-Abu (gray) color. It has a specific gravity of 1.59 ± 0.1 g/mL (bulk density) and is in powder form with granules. The product weighs 50 kg and has a minimum shelf life of six months. Water usage ranges between 15.5-17% by weight. It has an adhesive coverage of approximately ±2.6 m²/kg for lightweight bricks and ±1.5 m²/kg for red bricks. For plaster applications, it covers around 2.4-3.0 m²/kg. Its spreading power is measured by adhesion strength according to EN 1015-12 standards with a 10mm application thickness. The product undergoes quality testing for compressive strength based on ASTM C 109 standards. The total weight remains 50 kg.