There are 10 models from 35 m2 up to 508 m2 of exchange surface.
These units are built with tubes of steel and fin of separation 6.25, 8, 10 and 12,5 mm.
Whole group is galvanized by immersion in zinc (coil, air box, drip pan, etc…).
The air box and the drip pan may be of PRFV. The defrosting may be by water or hot gas or the both, optionally.