Maximum Security Perforated Grille

Frame is constructed from 4.5mm thick resistant steel and all sides welded with 4.5mm thick perforated panel having 8mm dia. holes. Whole structure is hot dip galvanized with the advantages of corrosion resistance. Security grilles are specially designed for maximum security prisons in order to secure the ventilation openings and provide proper air transfer for the facilities. The design prevents the inmates from using the grille to commit suicide. Available with flanged edges and are supplied without fixing holes as standard. Available in square and rectangular sizes.