Louvers

Inlet Louvers

Louvers are used on the air inlets of cooling towers to keep the circulating water inside the cooling tower.

L S Enterprise LLC offers two different types of air inlet louvers: cellular louvers and blade louvers.

Expert Guidance on Louver Selection for Best Fit and Performance

Water is a precious resource. In addition to the cost of having to replace water that splashes out from the air inlets, the circulating water contains chemicals and other substances that can be harmful to equipment and the environment. Water splashing out of air inlets during winter conditions can cause ice problems that can range from nuisance situations to true dangers of collapse if the ice build-up is large enough. We know the different types of louvers used on various cooling towers, and we understand the impacts on performance between them.

Inlet Louver Benefits

Reduces splash-out with low pressure drop
Helps prevent debris from being ingested into the tower
Reduces sunlight penetration of the cold water basin thus reducing algae growth
Suitable for both factory-assembled & field-erected towers and both counterflow & crossflow towers
PVC products available as either individual modules or panels framed in PVC or steel (galvanized or stainless)

CL80

As the latest design of a cellular louver, the CL80 offers improvements in splash-out reduction, light penetration, and application flexibility. Its nesting design prevents air, water, and light from bypassing between adjacent modules. With a design team led by Bill Miller, the specially designed flute geometry was based on use of CFD and CAD systems that were backed up by rigorous testing. The result is a louver design that balances pressure drop with a pathway that forces water to impact on the cellular walls and drain back into the cooling tower. Its refined flute geometry also provides a barrier to sunlight penetration for many more hours of the day compared to prior cellular louvers. The CL80 is available in both 2.5” [63.5mm] and 3.2” [81.3mm] air travel depths, and its standard module width of 16” [406.4mm] is often a better fit for many factory-assembled towers.

CL100

The CL100 is a field-proven product with decades of use on towers of all shapes and sizes. With its low pressure drop and cellular design, the CL100 provides a cost-effective solution to limit splash-out.

Metallic Inlet Louvers

Metallic inlet louvers are blade louvers made from 304SS and are ideal for non-combustible and/or high temperature applications. With their patent-pending design, they provide great corrosion-resistant performance that will last the life of your tower. They are available in both 2.5” [63.5mm] and 3.2” [81.3mm] air travel depths.

Cellular Louvers

Product	Sheet Pitch in. [mm]	Air Travel Depth in. [mm]	Standard Width in. [mm]	Sheet Thickness in. [mm]	Maximum Span ft. [m]	Comments
CL100	1.00 [25.4]	2.5 [63.5]	12 [305]	Corrugated: 0.015 [0.38] Exterior Flats: 0.030 [0.76] Interior Flats: 0.015 [0.38]	6 [1.8]
CL100 Framed Panel	1.00 [25.4]	2.875 [73.0]	Made to order	Corrugated: 0.015 [0.38] Exterior Flats: 0.030 [0.76] Interior Flats: 0.015 [0.38]		Available with flanges on any combination of sides (top/bottom/left/right) and oriented on either panel front (dry side) or panel back (wet side)
CL80	0.80 [20.3]	2.5 [63.5] – or – 3.2 [81.3]	16 [406]	Corrugated: 0.010 [0.25] Flats: 0.025 [0.64]	6 (1.8)	Adjacent modules nest to prevent bypass and splashout
CL80 Framed Panel	0.80 [20.3]	2.875 [73.0] – or – 3.57 [90.7]	Made to order	Corrugated: 0.010 [0.25] Flats: 0.025 [0.64]		Available with flanges on any combination of sides (top/bottom/left/right) and oriented on either panel front (dry side) or panel back (wet side)

Blade Louvers

Product	Sheet Pitch in. [mm]	Air Travel Depth in. [mm]	Standard Width in. [mm]	Blade Thickness in. [mm]	Maximum Span ft. [m]	Comments
ML25	0.80 [20.3]	2.5 [63.5]	12.77 [324]	0.018 [0.46]	8 [2.4]	Made of 304SS
ML32	1.00 [25.4]	3.2 [81.3]	13.01 [331]	0.018 [0.46]	8 [2.4]	Made of 304SS

Testimonials

Great Customer Service

“L S Enterprise LLC is an excellent source for Brentwood parts. They have extensive knowledge of cooling towers, and they make sure they are quoting what I actually need and not blindly quote what I ask for. They have caught my measurement errors on more than one occasion saving me from misquoting jobs and being short on parts at a job. Great customer service. ”

J.G.
California Contractor

One Of Our Best & Most Reliable Suppliers

“We’ve had a partnership with L S Enterprise LLC for many years, and they have proven to be one of our best and most reliable suppliers. The challenge of providing our customers with the most efficient and proper fill media for their cooling towers can be quite daunting. That is why we rely on Bill and Matt’s vast knowledge and experience to navigate all of the different Manufacturers, Models, and Flow Layouts of cooling towers out there. We would not be the company that we are today without L S Enterprise’s help! More importantly Matt and Bill are sincere, hardworking, responsive, and a pleasure to work with.”

Mike Morin
CT/HX, LLC

We Are Grateful For 25+ Years Of Outstanding Service

“The Evaporative Tower Service team and I are extremely grateful to Matt, Bill, and the LSE team for 25+ years of outstanding service as a core ETS vendor of film fill and cooling tower products. Their knowledge, experience, and dedication have provided timely fill selection solutions for every application we have presented them. LSE response and support is unmatched, and we look forward to shared success working with LSE for the next 25 year and beyond.”

James Patriquin
ETS

They Are A Great Vendor To Work With

“L S Enterprise LLC is a great vendor to work with and has exceptional knowledge and outstanding customer service. Matt Smith and Bill Miller are two great representatives for Brentwood Industries and have always been very helpful and available when we inquire about certain materials used for our cooling tower projects. They make it easy to get bids out to customers and get projects rolling. GTG Overhauling Services, LLC is proud to be affiliated with this company, and we will continue to inform our customers about the quality and performance of their products!”

Rosalinda Frietze
GTG Overhauling Services, LLC

We Look Forward To Continuing Our Partnership

“Delighted to share my outstanding experience with L S Enterprise LLC, particularly Bill Miller, instrumental in providing top-notch heat transfer fill. Their professionalism, efficiency, and commitment to quality from inquiry to delivery are commendable. Bill’s expertise ensured we selected the right fill for our needs, exceeding expectations in product quality. Seamless delivery, competitive pricing, and dedication to customer satisfaction make them a standout supplier. Highly recommend L S Enterprise and Bill Miller for high-quality heat transfer fill needs.”

Kevin Cherewaty
HCTS, Inc.

L S Enterprise & Industry News

Stay up-to-date on company and industry news and events.

L S Enterprise LLC Proudly Launches a New Website

January 27, 2025, East Earl, PA: L S Enterprise LLC is proud to debut our new website, www.LSEntLLC.com. Our original website biofilters.com launched in 1998. It was an important resource for those who were designing or building Recirculating Aquaculture Systems...

Join Us at the 2025 CTI Annual Conference in Memphis

January 27, 2025, East Earl, PA: L S Enterprise LLC will be attending and participating in the 2025 Cooling Technology Institute (CTI) Annual Conference in Memphis, TN, that runs February 2-6, 2025. Join us in Memphis as we learn about new technologies and goings on...

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