Sub Floor Metal Block Vent – Square Holes

  • Used during construction to provide sub floor ventilation in brickwork
  • Available in 190 x 90mm (Pictured – Slimline/Quarter Block), 190 x 190mm (Half Block), 390 x 90mm (Pictured – Slimline Block) & 390 x 190mm (Full Block)
  • Square hole design