Show moreThe IDEAL CLASSIC ÖKO ST 30 system is installed in the same way as the IDEAL CLASSIC ÖKO 30 system. But it's not just the ecological aspects that are impressive. IDEAL CLASSIC ÖKO ST 30 with straw insulation also offers outstanding performance characteristics. With a compressive strength of over 100 kPa, the straw heating elements meet the high demands of underfloor heating systems. Furthermore, the elements have excellent insulating properties. The aluminum heat-conducting plates, which are factory-laminated in both the IDEAL CLASSIC ÖKO 30 and ÖKO ST 30 systems, ensure homogeneous lateral heat distribution and transfer the heat directly to the floor or into the room.