Fiberglass-reinforced gypsum panel for pre-formed lowered systems; specifically designed for low-thickness and low-inertia systems; declared thermal conductivity of 0.32 W/mK; fixed spacing of 10 cm; Brinell hardness of 30 N/mm², shaped for laying 12 mm PE pipes with fixed spacing of 10 cm or 5 cm (only for item 382.04.87). Five versions: base panel, end panel, 10 cm studded panel, 5 cm studded panel, sub-collector panel. Usable dimensions: width 600 mm, length 1200 mm.