Fitted with optional aluminium or stainless steel gauze, Prowler Proof Insect screens are fly screens suitable for bushfire prone areas. With stainless steel gauze, the Insect screens are approved up to the extreme Bushfire Attack Level 40 (BAL 40). Insect screens with aluminium gauze are approved up to BAL 29. The Australian Standard for construction of homes in bushfire prone zones (AS 3959) simply states that openable windows must be screened with corrosion-resistant steel, bronze or aluminium mesh with an opening of less than 2 mm x 2 mm. You can rely on Prowler Proof Insect screens – even in a bushfire.