Substructure elements for lifting sliding doors
Moisture and rot-resistant



  • Rot-resistant cover panel
  • Thermal insulation values up to 0,1 W/m²K
  • High load capacity
  • Good mounting options
  • Very good screw retention qualities
  • Retain their shape and dimensions
  • Seamless connection with dovetail connector





The following services are included in the square metre price:

  • Preassembled, custom-made according to the desired length, width and profile thickness
  • Four-sided counter profile work, tailored to your frame or threshold profile
  • Delivered picked to order
  • No waste, machine, labour and storage costs



Product description:


Surfaces Untreated
Cover panels Polyurethane panel, plywood panel IW67
Insulation Polystyrene rigid foam, 30 kg/m³
Thickness 100 to 240 mm
Sizes Polyurethane: 500 x 95 to 3588 x 1294 mm
Plywood: 500 x 95 to 2510 x 1294 mm


Frinorm plinth elements for wooden and wood-metal lifting sliding doors for floors are especially suited for a wide range of demands, such as thermal protection and a high load capacity. They are available with a mildew- and rot-resistant polyurethane panel or a plywood panel IW67. Intensely expanded polystyrene rigid foam (EPS perimeter), 30 kg/m3, is used for thermal insulation.