Horizontal Louvers

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PalmSHIELD horizontal louvered screening is perfect for providing excellent ventilation while keeping items out of sight from others. Using the industries’ only picture frame design, each panel is rigid enough to stand on its own.  Maintaining a consistent design throughout the system, PalmSHIELD can be configured as a series of screens, grills, swing gates and even sliding gates.  PalmSHIELD is custom fabricated to each application, allowing end users to select the amount of visibility and air flow by varying louver spacing.

PalmSHIELD is unique in providing the industries’ widest louver. Each louver is .1250 thick with an installed profile of 2” x 2.873” tall.  Not only is the PalmSHIELD a larger profile but the entire profile is sloped providing less visibility and better air flow.  Only PalmSHIELD uses a 3” x 3” x ¼” angle vertical supports. Each louver is welded to the vertical supports.  Because of the larger vertical support, PalmSHIELD provides a 2 ¾” weld-able surface to attach louvers to the frame.  PalmSHIELD uses a 3” x 3” x ¼” angle top and bottom cap. Most systems do not provide a rigid top cap.  A top cap is criticalin protecting the panel from falling debris, hail, etc. while the bottom cap protects the louvers from foot traffic and mowers.  The vertical supports and horizontal caps are welded together to form the industries’ only picture frame design. This design provides a rigid framework to support the louvers.

PalmSHIELD uses a 2” x 1/8” aluminum flat bar not to exceed 24” apart to support the louvers between the framework. This support prevents intruders from attempting to spread the louvers apart to gain access.  Larger than most systems, PalmSHIELD uses a 4” square x ¼” or 3/8” wall post. The larger and thicker walled posts is suited for high wind and snow loads.  Posts typically do not exceed sixty inches on center.  All nuts, bolts and fasteners are stainless steel. If gates are incorporated into your system, only our Gorilla hinges will be allowed.

After fabrication is completed, all materials are carefully sweep blasted and powder coated. The most important part to any coating system is the preparation of the materials.  Sweep blasting removes any foreign debris and opens the aluminum up for adhesion.  Custom colors are available.  PalmSHIELD uses polyester powder coating in accordance with material hardness ASTM 3363 2H.  PalmSHIELD is an excellent choice for any architectural and mechanical equipment screening, enclosures, rooftop enclosures, trash enclosures, etc.

Direct Visual Screening & Free Area

PalmSHIELD louvers standard design uses a ½” overlap based on direct visual screening. Direct visual screening is the standard measure for determining the percentage of visibility.  It is exactly as it is described.  Based on looking head on at a perfect horizontal plane to a louver that is installed plumb, can you see through the louvers?  Any visibility at this vantage point is a percentage of visibility.

PalmSHIELD’s standard design uses a ½” overlap of louvers. This guarantees 100% direct visual screening under any circumstances.  We are happy to modify our louvers to provide a lesser percentage of direct visual screening for our customers which would require we space the louvers farther apart.

Engineering

Any louvered screen will increase the wind load on it supporting structure. This has traditionally been an educated guess with a considerable safety factor.  However, most architectural louvered screens are attached to adjoining walls and buildings that must meet an even greater wind load coefficient for solid surfaces.

Though PalmSHIELD may be installed as a wall louver where the louvered panels are installed like windows and attached to the building structure; PalmSHIELD louvers has its own independent structure that classifies it as a standalone louvered equipment screen system. It’s this independent structure that carries the load of assuring the overall system meets the latest IBC and UBC codes.

PalmSHIELD has been designed and engineered to meet these codes. Through measured calculations, PalmSHIELD’ s louvered panels with an 80% opening has a horizontal load of 19 psf.  This wind load calculation is based on 100 mph winds which complies with the 30psf load requirement on solid building surfaces.

This load calculation is then used in calculating the design of the structural post system that supports the panels. From this calculation, we can determine post design, material selection and post spacing.  By applying this load to the square footage of the panel size; we can properly estimate these specifications on a per case basis.  It must be stated that these are only estimated loads because loading will vary exponentially based on the height of the panels.  Not all wind loading is equal top to bottom of the louvered panel.  For actual engineered calculations, each system must be independently engineered by a registered engineer within the jurisdiction it will be installed.  This level of engineering is not included in the standard PalmSHIELD quote.  If local stamped engineering is required for your system, please indicate so at time of quote.  We will contact a local engineer in the respective jurisdiction and work directly with them to provide the necessary calculations.

What is important to recognize is that PalmSHIELD is not just another louvered screen system manufacturer. We design each system with the customer in mind.