Insulating body for SitaSani® 63 or SitaSani® 90, made of polyurethane, 500 x 500 x 60 mm, thermal conductivity ? = 0.025 W/m ¬∑ K, compressive strength 200 kPa, bulk density approx. 50 kg/m¬≥, BSK B2/E*, as installation aid and thermal insulation to prevent thermal bridges.