MSSL - Straight

Product Information

View Performance Data MSSL

Straight Fixed Louver MSSL

Price MSSL Series straight louver security grilles feature all-welded construction and integral wall sleeves for medium security sidewall applications.


  • Faceplate: 14 gauge hot rolled steel. Optional Thickness: 3/16" (5), 10 gauge or 12 gauge hot rolled steel.
  • Louvers: 1/8" (3) x 1/2" (13) (cold rolled steel CRS) louvers, 0° deflection (Core C1) through 14 gauge vertical support mullions located on 6" (152) centers. See for optional cores.
  • Wire Mesh: 10 gauge x 3/8" (10) clear opening steel wire mesh secured by angles behind core.
  • Sleeve: 14 gauge hot rolled steel, length as required, stitch welded seams. Optional Thickness: 3/16" (5), 10 gauge or 12 gauge hot rolled steel. Additional options include continuously welded seams, bent out rear flange (see Option S5).
  • 4 Sided Mounting Frame: 1" x 1" x 1/8" (25 x 25 x 3) hot rolled steel angle frame shipped loose for field welding. For optional mounting frames (see Options MF1, MF2, MF4).
Options & Accessories:
Material: All-aluminum (minimum security), or all 304 stainless steel. Only available in 10 gauge construction.

Fastening Methods: See Options MR6, MR7, CS.

Dampers: See Options 3BF, 3BR.

Barrier Bars: See Options BB16, BB17, BB18, BB19, BB20, BB21, BB22, and BB23.

Transfer Grille Construction: See Option TGCS.

Straight Fixed Louver Face MSSL

Product Selection Checklist

  1. Select Unit Size based on desired performance characteristics.
  2. Select Outlet Type by model number.
  3. Select Options & Accessories if required.
  4. Specify Wall Thickness.
  5. Select Finish.
12" x 12" / MSSL / Core C2 / 8" / B12

White Powder Coat
For optional and special finishes see color matrix.

Available Sizes
6" x 6"
(152 x 152)
30" x 30"
(762 x 762)
* For Option Oversize Grilles.
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