ST-033-01 | Aluminium louvre blade with 33 mm pitch and 50% physical free area. Made of extruded aluminium (EN AW 6063 T66), anodized (20 microns) or powder-coated in any RAL, Sikkens, NCS or Interpon color (60–80 microns). Blades can be curved (minimum radius 800 mm) and combined with a top louvre (ST-033-02), a long/short bottom blade (ST-033-03/-04) and single or double doors with standard STORAX hardware. Available with single holder ST-033-11 (30 mm) or dual holder ST-033-12 (34 mm) for thermal expansion. Pitch: 33 mm, height: 37.5 mm, depth: 20.4 mm, visual free area: 59%, max. span: 800 mm at wind load qb 800 Pa.