KOOLAIR perforated sheet grille, model 21-FR-R, with L x H dimensions, for supply or return. Made of galvanised sheet steel, with standard Ø4.8 mm round perforation – 6.4 mm grid element spacing, and available with other perforation patterns, i.e., Ø5 mm – 8 mm grid element spacing.
The grille can include a control damper (-O) and fixing accessories to be determined.
Painted in RAL colour to be defined.
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