NOBES Shutter Material Material 100% Basswood(PVC or Aluminum are also available). Louver Width 2.5\" (64mm), 3.5\" (89mm), 4.5\" (115mm). Louver Thickness 0.3976\" (10.1mm), 0.4803\" (12.2mm). Tolerance Width: +/-0.7mm, Thickness: +/-0.4mm. Frame Available Lframe, Z ...