Perforated Return Grille

Airvector’s PRE series grilles are designed for efficient air return and transfer, featuring a perforated face with 3/16″ diameter round holes on 1/4″ staggered centers, providing 53% free area. These grilles combine modern architectural appeal with functionality, ensuring minimal pressure loss while maintaining a sleek and structured design.


  • Fit overlap openings in solid ceiling and walls.
  • For drywall or any surface mounting.
  • round holes on 1/4″ staggered centers, affords 53% free area.
  • Available in any size 4″ x 4″ and over.
  • Countersunk mounting holes on frame.
  • Powder paint coating – White (other colors available upon request).



N7   Opposed Blade Damper for Commercial Grilles

  • Galvanized steel construction.
  • Suitable for GSA, GAA, GCA, GCR, ERE, ERT, ERU, REAL, RAF and ALB.
Photo 2 - Perforated Return Grille.