Abstract: An air treatment unit for treatment of an air stream, including a pad having a multitude of narrow air-flow channels, the walls of which are formed by corrugated sheets of a stiff material, the sheets being positioned and fixed generally in parallel planes next to each other in such a way that, as seen from an inlet side of the pad to an outlet side thereof, the channels formed by the corrugations of any two sheets located next to each other extend in two different directions the vertical plane of the respective sheet. At least in a central region of the pad, all sheets are positioned obliquely sideways, whereby all channels extend obliquely sideways relative to inlet and outlet surfaces of the pad.

Abstract: An insulation panel (1) for cabinets containing air handling equipment has an exterior housing section (2) and an interior housing section (3) which is joined to the exterior housing section by snap-in engagement means, preferably comprising a plurality of tabs (12) provided on the interior housing section. The tabs engage a flange (6) of the first housing section (2) via a first gasket (13), and a circumferential side wall (10) of the second housing section (3) abuts against the first housing section (2) via a resilient second gasket (14), whereby the tabs (12) abut against said first gasket under some pressure to firmly secure the first and second housing sections to each other without creating any thermal bridges between the housing sections.