Architectural Louvers are used to allow air into a building, while keeping out undesirable elements from mother nature like rain, water, dirt, and debris. They also add the extra element of aesthetic design to a building exterior. Use your air intake or ventilation requirements to improve the look of any building.
Use the following methods to select the right louver for your application:
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Common Criteria :
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Ask Yourself :
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What will the louvers need to do?
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How much air needs to go through the louvers?
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| How do the louver prices compare? | |
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What about appearance, wall depth and type, special
shapes, mounting options, and finishes?
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Use the Following table to select the correct louver type for by application:
| Louver Application | Louver Type | Model |
| Decorative, Air Exhaust, Ventilation | Standard Blade Louvers | E2JS, E4JS |
| Higher Wind, Still Air Exhaust | Storm Blade Louvers | E2KS, E4KS |
| Lower Pressure Drop, High Air Exhaust Velocity | Standard or Storm Louvers (Performance Series) | E4JP, E4KP, E6JP, E6KP |
| Air Intake or High Wind Areas | Drainable Blade Louvers | E2DS, E4DS |
| Air Intake, High Wind, Low Pressure Drop, High Air Intake Velocity | Drainable Blade Louvers (Performance Series) | E4DP, E6DP |
| Extreme Weather, Extreme Intake Air Velocity | Wind Driven Rain Louvers | E4WH, E6WH |
| Equipment Screen Application | Louver Type | Model |
| Full visual screening from horizontal sight line or below, blades horizontal | Inverted Standard Blade Louvers | V2KS, V4JS |
| Full visual Screening from all angles, blades horizontal | Sight Proof Blade Louvers | V4YH |
| Full visual Screening from all angles, blades vertical | Sight Proof Blade Louvers | V4YV |
Select the louver models by free area:
Table is based on a test size of 48" wide x 48" high for comparison purposes:
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Product Model
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Free Area
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First Point of Water Penetration (free area velocity)
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Overall Performance (cubic feet per min.)
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Pressure Loss at this velocity (inches water gauge)
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59.3%
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930 fpm
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8826 cfm
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0.12
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58.4%
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960 fpm
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8976 cfm
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0.13
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58.4%
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960 fpm
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8976 cfm
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0.13
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57.7%
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1046 fpm
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9655 cfm
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0.13
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57.3%
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1123 fpm
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10298 cfm
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0.18
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57.3%
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1123 fpm
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10298 cfm
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0.18
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56.0%
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930 fpm
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8333 cfm
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0.13
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51.4%
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>1250 fpm
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10275 cfm
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0.21
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50.6%
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>1250 fpm
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10113 cfm
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0.25
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50.4%
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888 fpm
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7157 cfm
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0.15
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50.4%
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888 fpm
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7157 cfm
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0.15
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49.4%
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889 fpm
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7032 cfm
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0.12
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48.7%
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725 fpm
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5648 cfm
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0.08
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48.7%
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725 fpm
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5648 cfm
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0.08
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Select the louver models by price:
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Product Model
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Price Compare*
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Least Expensive
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5% more than E4JS
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5% more than E4JS
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10% more than E4JS
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10% more than E4JS
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10% more than E4JS
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15% more than E4JS
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15% more than E4JS
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25% more than E4JS
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30% more than E4JS
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30% more than E4JS
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35% more than E4JS
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90% more than E4JS
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140% more than E4JS
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*Price values are for comparison purposes only. Actual quotation prices may vary depending on the sizes required and the options selected.
The louver appearance should play a significant role in louver selection. It is often ignored in favor of "function over form". However, with so many high performance louvers available the appearance can play a significant role. For example, if your louver heights are small, you will want a narrow blade spacing. This will allow more blades in the frame and improve the appearance. Below are our louver blade spacings listed by model:
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Product Model
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Blade Spacing
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Frame Depth
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Wall Depth
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2.25"
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2"
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>3.5"
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2.25"
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2"
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>3.5"
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2.25"
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2"
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>3.5""
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3.00"
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4"
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>5.5"
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4.20"
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4"
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>5.5"
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4.30"
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4"
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>5.5"
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3.50"
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4"
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>5.5"
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3.50"
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4"
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>5.5"
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4.75"
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6"
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>7.5"
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4.75"
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6"
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>7.5"
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5.00"
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4"
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>5.5"
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5.00"
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6"
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>7.5"
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2.00"
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4"
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>5.5"
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2.00"
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6"
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>7.5"
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Special shape louver suggestions: best choice E4JP, E4KP