utclassic 2017-10-27T12:27:00+02:00


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UTclassic is a patented prefabricated radiant panel suitable for wall and ceiling installations.

UTclassic is a patented prefabricated radiant panel suitable for wall and ceiling installations. Its main characteristic is that it contains inside the supply backbone and the system of connection between the panels.

Thanks to the high surface ratio “net/gross radiant area”, equal to 88% of the UTclassic panel, a greater radiant power can be obtained in equal occupied areas. The panel size is 240×120 cm can be modulated so as to obtain new sub-modules that increase the adaptability of the radiating

prefabricated radiant panel UTclassic - pannello radiante prefabbricato UTclassic

technical specifications

  • thermal insulation support in pre-moulded expanded polystyrene, class 200 density, 39 mm thick, shaped to fit in the aluminium heat exchangers;

  • pre-moulded aluminium heat exchangers 400 μm thickness, shaped to fit in the hydraulic circuit;

  • hydraulic circuit pipe in PE-Xc ∅ 8×1 mm, with intermediate oxygen barrier, specially shaped to be connected to the backbone ends in the panel and to be cut in half to get base sub-modules of 60 x 120 cm;

  • backbones in multy-layer PeX-Al-PeX ∅ 20×2 mm pipe incorporated into the panel along the major centre axis, with triple fittings at the backbone ends for the connection both to the 8 mm pipe and to another panel through push-button joint or to the supply line.

    The backbones are not anchored to the panel, to facilitate the joint insertion and also to ensure the thermal expansion and tolerance for small transversally misalignments between the panels;

  • longitudinal electrical duct (on demand) cut from the polystyrene board (sect. 28 x 20 mm) placed between the back bones for the passage of the cables and connecting the half moon ends;

  • gypsum finishing plasterboards, the surface is special papered to facilitate the finishing operations and has laser-traced drawing of the hydraulic circuits and marks for the anchorage screws at 400 mm and 600 mm. The board is glued to the whole set of insulated support pipe-heat exchangers with water-based vinyl glue. The panel is engraved on the short sides centre with two ∅ 150 mm caps to allow the connection of the joints and the testing. The closing caps are included.


  • The 240×120 cm size panel can be modulated: it can be cut along the center lines of the main module to get new sub-modules and increase the adaptability of the radiating surface.

integrated LED lighting

  • During the construction phase, the laser marking, which shows the hydraulic circuit, helps the easy placement of LED lights (up to 5 cm diameter). This innovative technology, fully engineered by UnderTree ensures a lighting solution with increased energy saving and the most advanced lighting comfort.
    Moreover, between the two panel backbones there is a longitudinal site where the electrical cables can be placed.

technical specifications



radiant net area (EN 14240)

2.53 sqm

radiant gross area (panel total surface)

2.88 sqm

net radiant percentage

88 %

water content

1.85 l

board thermal conductivity

0.21 W/mK

cooling capacity (HLK certified)

49 W/m² (Δt: 8k)

heating capacity (HLK certified)

75 W/m² (Δt: 15k)

and weight

note 1

dimensions (W x H x D)
2400 x 1200 x 52.5 mm

38 kg

UTclassic dimensions

complementary panels

UTclassic neutral: blank panel for not radiant surfaces to be combined with UTclassic radiant panels (dimensions 2400 x 1200 x 52.5 mm)

available additional finishes


note 2



UTfono BQ41

UTfono BQ41

UTfono BQ42

UTfono BQ42

UTfono BS60

UTfono BS60

UTfono BL6

UTfono BL6






  1. All the indicated dimensions have a tolerance of ± 1 mm.
  2. Supply subject to availability or minimum purchasing requirements.