MSBL – Medium Security Bent Louvered Grille

MSBL – Medium Security Bent Louvered Grille
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MSBL – Medium Security Bent Louvered Grille


Louvered security grilles features all-welded construction with a heavy-gauge wire screen fixed behind the louver blades for additional security.

Typical Applications
Security grilles reduce unwanted access to ductwork in spaces where supervision is minimal and vandalism or misuse is a risk. Such areas include: correctional facilities, psychiatric hospitals, rest stops, park facilities, schools, and sports venues. Price louvered security grilles feature all-welded construction and integral wall sleeves, ideal for medium security sidewall applications.Bent Louvers increase durability with formed blades. The 14 GA hot rolled steel bent louvers are spaced on 3/8 in. centers and set at a 45° deflection with 14 GA vertical support mullions on 6 in. centers.

Construction Options

  • Material
    • Steel
    • Aluminum (minimum security)
    • 304 stainless steel
  • Size
    • Minimum: 6 in. x 6 in.
    • Maximum: 30 in. x 30 in.
  • Options
    • Dampers
    • Barrier bars
    • Transfer grille construction (TGCS)