Interstate Grating Products

Louver Grate

LG-Louver Series

Manufactured from aluminum extrusions, "LG" series louver grate is designed to offer an economical solution for architectural applications. Available in four popular patterns with total or partial visual concealment, all "LG" series products offer a minimum 63% open air flow. Popular applications include:

  • Sunscreens
  • Visual Barriers
  • Security Screens
  • Fencing

Louver Architectural Grating

Architectural Grating


The unique flexibility of the "LG" series allows architectural freedom for both vertical and horizontal applications. Vertical applications allow for maximum air flow and resist the accumulation of snow, rain, dirt and debris. Screening of parking structures and visual concealment of unsightly ventilation or mechanical equipment is easily accomplished. Installed horizontally, the multiple tilt patterns provide options for sunscreens and building facades. Once again the high percentage of open area allows for important air circulation and the free passage of moisture.

Architectural Grating Example GateVisiScreen panels placed vertically conceal rooftop mechanical systems.


The natural corrosion resistance and beauty of mill finish aluminum can be enhanced with clear anodizing. Other popular anodizing options include light and dark bronze shades. Powder coating, epoxy and Kynar finishes are available in the complete RAL color palette. Properly applied, these finishes offer years of continuing service in colors designed to complement the look and feel of adjacent architecture.


"LG" series products are easily fabricated to any size and configuration. Radial or diagonal cuts accommodate "free-form" design beyond simple squares and rectangles. Louvers can be welded into component framework and quickly bolted to the supporting structure with limited field labor. All fabrication can be completed prior to coating, maximizing the integrity of the finish.

Architectural Grating Example Building

Architectural Grating Example CanopyVisiShield panels placed horizontally provide solar protection at building entrance.

Architectural Grating Building AccentsLouver Grate panels are a distinct and practical accent for building fascades.

Louver Grate Load Table