Case (100mm section) made of anodised or electrostatically powder-painted aluminium profile for extended life.
Galvanised steel sheet rear cover 0.5mm thick.
EPDM rubber and silicone seal for maximum waterproof protection
Heavy duty absorber copper tubes  (harp type) laser welded to the absorbing plate for instant heat transmission.
Aluminium absorbing full size plate coated with Chrome-Nickel blue selective layer.
Solar irradiation absorbance factor a=0.95+_2% and reflection e=0.5+_2%
Insulation with rockwool and glass fibre wool of high density for minimum heat loss
Tempered glass front cover low iron 4mm thick ensuring durability and high transparency factor