Steel Maximum Security Transfer Grille with Rounded Perforations
The SG-PRT is a maximum security grille designed to allow a greater effective free area and superior airflow without compromising security and safety. This steel grille is provided with two face plates welded to each end of a sleeve for block walls or for pouring in place in concrete walls.
  • Face Plate 3/16” steel with 5/16” diameter holes on 7/16” staggered centers and 1” border
  • Sleeve 3/16” steel
  • Finish #26 White
  • All Welded Construction