LHR is a rectangular roof hood with ribs that is used for both outdoor air and extract air.
When used for outdoor air intake it is recommended not to let the air velocity exceed 2 m/s due to risk of rain or snow pull in.
The hood is supplied as standard in galvanised form, but is also available painted.
LHR is supplied as standard with LS joint for guiding.
When connecting to the roof through connection TGR, the special transition piece TGR-LHR must be used. (see page TGR).