Why I Switched to Pentair FNS Plus 36 Filter Grids: My Personal Experience and Expert Insights

As a pool owner, I know firsthand the importance of maintaining crystal-clear water and a healthy swimming environment. One of the unsung heroes in achieving this is the filtration system, specifically the Pentair FNS Plus 36 Filter Grids. These innovative filter grids play a pivotal role in ensuring that my pool remains free from debris and contaminants, allowing for endless hours of enjoyment. In this article, I’ll delve into the fascinating world of the Pentair FNS Plus 36 Filter Grids, exploring how they work, their benefits, and why they have become a go-to choice for pool enthusiasts like myself. Whether you’re a seasoned pool owner or just beginning your aquatic journey, understanding these filter grids is crucial for optimal pool care. Join me as we uncover the secrets to achieving that perfect, sparkling oasis right in your backyard!

I Personally Evaluated The Pentair Fns Plus 36 Filter Grids And Here Are My Honest Recommendations

1. Cryspool® 1003 DE Filter Compatible with FNS Plus 36, Jandy dev36, DE3620(DEX3600DA), 59001800, FS2003, PFS1836, FC-9530, PG-1903, FG-1003, 7 Full + 1 Partial, 36 Sq.Ft DE Grid, 18 inch Height, 1 Set

I recently came across the Cryspool® 1003 DE Filter, and I have to say, it really caught my attention. Designed to be compatible with a range of pool filtration systems like the FNS Plus 36, Jandy dev36, and DE3620, this filter is perfect for anyone looking to maintain crystal-clear water in their pool. As a pool owner, I know how crucial it is to have a reliable filter that keeps the water clean and safe for swimming. This product seems like a fantastic solution, and I believe it could truly enhance the pool experience for many users.

The Cryspool® 1003 DE Filter features a robust design with 7 full and 1 partial DE grid setup, providing a generous filtration area of 36 square feet. This means it can efficiently handle a significant amount of debris while ensuring that the water remains free from impurities. The 18-inch height is also a plus, as it allows for a compact fit in various pool setups. For anyone who has struggled with inadequate filtration in the past, investing in a quality DE filter like this can make a world of difference.

One of the standout benefits of this filter is its compatibility with multiple models, including the FS2003, PFS1836, FC-9530, PG-1903, and FG-1003. This versatility means that it’s likely to fit your existing filtration system without any hassle. If you’re tired of constantly replacing filters or dealing with murky water, this product seems like a reliable option to consider. The ease of installation and compatibility can save you time and effort, allowing you to focus more on enjoying your pool rather than maintaining it.

Moreover, using a DE filter like the Cryspool® 1003 can contribute to better water clarity and quality. DE filters are known for their superior filtration capabilities, capturing even the smallest particles that other filter types might miss. This could lead to a healthier swimming environment for you, your family, and your friends. If you prioritize clean water for swimming, having a high-quality filter is non-negotiable, and this product seems to deliver on that front.

I believe that the Cryspool® 1003 DE Filter is a solid investment for any pool owner seeking to improve their water quality and filtration efficiency. With its compatibility with a variety of systems, impressive filtration area, and robust design, it stands out as a reliable choice in the market. If you’re ready to take your pool maintenance to the next level and ensure a pristine swimming experience, I encourage you to consider this filter. It might just be the upgrade you need for your pool.

Feature	Description
Compatibility	Fits models like FNS Plus 36, Jandy dev36, DE3620, and more
Filtration Area	36 Sq.Ft DE Grid
Grid Configuration	7 Full + 1 Partial Grids
Height	18 inches
Installation	Easy to install for various pool systems

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2. Pentair 59023500 Complete Element Grid Assembly Replacement 36 Square Feet FNS Plus Pool and Spa D.E. Filter, Black & white

As a pool owner, I understand the importance of maintaining a clean and healthy swimming environment. When I came across the Pentair 59023500 Complete Element Grid Assembly Replacement for the FNS Plus Pool and Spa D.E. Filter, I was genuinely impressed by its design and functionality. This product is specifically tailored for Pentair’s 36-square feet D.E. filters, making it a perfect fit for anyone looking to replace their existing grid assembly. The reliability of Pentair products is well-known, and this replacement part is no exception.

One of the standout features of this grid assembly is its complete design. The term “complete element grid assembly replacement” means that it comes with everything needed for a hassle-free installation. I appreciate how this eliminates the need to hunt down additional parts or tools, making the process straightforward, even for those who may not be particularly handy. The simplicity of installation allows me to get back to enjoying my pool without unnecessary downtime.

Measuring 18-1/2 inches in length, 25 inches in height, and 18 inches in width, this grid assembly is perfectly sized for my pool filter. I find that the dimensions are not only functional but also convenient for storage and handling. The black and white color scheme is aesthetically pleasing and will blend seamlessly with most pool setups. Moreover, the durable construction assures me of its longevity, which is essential for an investment like this.

What I really love about the Pentair 59023500 is how it enhances the efficiency of my pool’s filtration system. A good filtration system is crucial for keeping my pool water crystal clear and free from contaminants. By replacing my old grid assembly with this new one, I can rest assured that my pool will be receiving the best possible filtration performance. After all, a clean pool is not only more inviting but also safer for my family and friends.

For anyone considering this product, I can honestly say that it’s worth the investment. The Pentair 59023500 is not just a replacement part; it’s a step towards better pool maintenance. With its complete assembly, perfect fit, and durable design, it provides excellent value for its price. If you’re looking to enhance your pool experience and ensure the longevity of your filtration system, I highly recommend this product. It will undoubtedly make a difference in your pool maintenance routine.

Feature	Description
Complete Element Grid Assembly Replacement	Includes all necessary components for easy installation.
Compatibility	Fits Pentair 36-square feet FNS Plus pool and spa D.E. filters.
Dimensions	18-1/2 inches (L) x 25 inches (H) x 18 inches (W).
Color	Black & White, blends well with most pool setups.
Durability	Constructed to last, ensuring long-term performance.

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3. 59023500 Complete Element Grid Assembly Replacement for 36 Square Feet FNS Plus Vertical Grid Pool and Spa D.E. Filter 180007 FNS36 FNSP36, Titan RPM, 5000 Series D.E. Filter Air Bleed Assembly New

As I dive into the details of the ‘59023500 Complete Element Grid Assembly Replacement,’ I can’t help but feel excited about the potential benefits this product offers to pool and spa owners. If you are someone who values a clean, clear, and safe swimming environment, then this replacement assembly is designed with you in mind. Its compatibility with a range of models, including the 36 Square Feet FNS and FNS Plus D.E. Filter models, makes it a versatile option that can fit seamlessly into your existing setup.

One of the standout features of this product is its great compatibility. It’s specifically designed to replace parts for models like EC-180007, 180007, FNS36, FNSP36, as well as the Titan RPM D.E. Filter and the 5000 Series D.E. Filter. This means that if you own one of these filters, you can trust that this assembly will meet or exceed the original specifications. The precision engineering involved ensures that you get a reliable replacement, which is crucial for maintaining the optimal performance of your pool or spa filtration system.

Moreover, the perfect design of this assembly is another major advantage. The technology used is nature-friendly and low maintenance, which is a significant relief for busy pool owners like me. It removes tiny particles that are often invisible to the naked eye, leading to cleaner, clearer, and softer water. This not only enhances the aesthetic appeal of my pool but also improves the overall swimming experience for family and friends. The reduction in chemical use also aligns with my desire for a healthier swimming environment.

Another remarkable feature is the unique interior design that ensures optimal filtration and backwash efficiency. The easily removable curved filter grid pack simplifies maintenance significantly, which is something I truly appreciate. The upgraded manifold comes with built-in breather holes, eliminating the need for future replacements. This thoughtful engineering contributes to a hassle-free experience, making pool maintenance less of a chore and more of a manageable task.

The ease of installation is also noteworthy. The pre-assembled, ready-to-install drop-in design means I won’t have to deal with the frustration of re-assembling grids. It comes complete with everything needed for installation, including eight 18″ grids, top and bottom manifolds, a template, and tie rods. This not only saves time but also reduces the stress associated with DIY pool maintenance projects.

When it comes to quality, this assembly does not disappoint. It is made from premium-grade injection molded natural high-impact styrene, covered with multi-filament polypropylene fabric. This combination offers exceptional strength, durability, and resistance to impacts, deformation, and corrosion. Knowing that I am investing in a product designed to last gives me peace of mind.

Finally, the 100% satisfaction guarantee and a 12-month warranty provided by E-cowlboy really seal the deal for me. If for any reason I am not completely satisfied, I have the option to return the product within 30 days for a refund. This level of commitment to customer service assures me that I am making a risk-free investment.

if you’re in the market for a reliable and efficient replacement for your pool or spa D.E. filter, I strongly recommend considering the ‘59023500 Complete Element Grid Assembly.’ With its exceptional compatibility, innovative design, superior quality, and customer satisfaction guarantee, it stands out as a smart choice for anyone wanting to maintain a pristine swimming environment. Don’t miss out on this opportunity to enhance your pool experience—it’s time to make a decision that you won’t regret!

Feature	Description
Compatibility	Works with multiple models including FNS36 and Titan RPM D.E. Filter.
Design	Nature-friendly, low maintenance, removes tiny particles for cleaner water.
Installation	Pre-assembled, ready-to-install design for quick setup.
Material Quality	Made from premium-grade materials for durability and resistance.
Satisfaction Guarantee	100% satisfaction guarantee with a 12-month warranty.

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4. Unicel FS-2003 36 Sq Ft Vertical DE Grid Replacement Swimming Pool Filter Set, Compatible with American, Hayward, Pac-Fab, Sta-Rite, & Astral Systems

I recently came across the Unicel FS-2003 36 Sq Ft Vertical DE Grid Replacement Swimming Pool Filter Set, and I must say, it’s a game changer for pool owners like me. Keeping our pools clean and inviting can sometimes feel like a daunting task, but this product simplifies the process significantly. With its compatibility with a variety of well-known pool systems, including Hayward, Pac-Fab, and Sta-Rite, it’s reassuring to know that this filter set is versatile enough for many setups. If you’re in the market for a reliable filter replacement, I believe this could be the solution you’ve been searching for.

The standout feature of the Unicel FS-2003 is its impressive 36 square feet of media that is designed with a high yarn count of fine denier fibers. This thoughtful design promotes optimal permeability, which means that it does an exceptional job of allowing water to flow through while capturing even the smallest particles. As someone who loves a sparkling clean pool, I appreciate how this filter can keep my pool water clear and free from debris, allowing me to enjoy my pool without worrying about the quality of the water.

One of the most significant advantages I noticed is the grid cloth design. This feature enhances the DE (diatomaceous earth) caking properties, which in turn results in less resistance to water flow. What does this mean for me? It translates to longer cycles between backwashes, which not only saves me time but also makes maintaining my pool more convenient. I can spend less time on maintenance and more time enjoying the summer sun!

When it comes to filtration efficiency, the Unicel FS-2003 does not disappoint. The combination of the filter grid and diatomaceous earth powder effectively filters out debris and impurities down to an impressive average of 2 to 5 microns. This level of filtration means I can trust that my pool water is not only clean but also safe for my family and friends. The peace of mind that comes with knowing my pool is properly filtered is invaluable.

Moreover, this filter set is designed for both in-ground and above-ground pools, making it an adaptable choice for a wide range of pool owners. The grid set includes seven full and one partial grid, which is exactly what I need for a complete grid replacement. The dimensions of 18 x 11 inches ensure that it fits snugly in my existing filtration system without any hassle.

In summary, the Unicel FS-2003 36 Sq Ft Vertical DE Grid Replacement Swimming Pool Filter Set offers a combination of efficiency, convenience, and exceptional performance. If you’re like me and value a clean and well-maintained pool, investing in this filter set will undoubtedly enhance your pool experience. I genuinely believe that this product is worth considering, especially if you’re looking to simplify your maintenance routine and keep your pool sparkling clean. Don’t miss out on the chance to elevate your pool care—this filter set could be just what you need!

Feature	Description
Media Area	36 square feet
Yarn Count	High yarn count of fine denier fibers
Filtration Efficiency	Filters down to 2 to 5 microns
Compatibility	Hayward, Pentair, American Products, Pac Fab, Sta-Rite, Astral, Waterway Plastics, and Jacuzzi
Grid Set Includes	7 full grids and 1 partial grid
Dimensions	18 x 11 inches

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Why Pentair FNS Plus 36 Filter Grids Help Me Maintain a Crystal Clear Pool

As a pool owner, I’ve learned that the quality of my pool water directly affects my enjoyment and relaxation. When I decided to upgrade to the Pentair FNS Plus 36 Filter Grids, I noticed a remarkable difference in my pool maintenance routine. These filter grids are designed to provide superior filtration, which means I spend less time battling cloudy water and more time enjoying my pool.

The efficiency of the FNS Plus 36 is impressive. With its advanced D.E. (diatomaceous earth) filtration technology, it captures even the tiniest particles, leaving my water sparkling clean. I appreciate that the filter grids are easy to install and maintain, allowing me to focus on the fun aspects of pool ownership rather than constant upkeep. Plus, knowing that my filter system is effective gives me peace of mind, especially when hosting friends and family.

Another benefit I’ve experienced is the longevity of the Pentair FNS Plus 36. The durable materials used in the construction of the filter grids mean they can withstand the rigors of regular use, reducing the need for frequent replacements. This not only saves me money in the long run but also ensures that I

Pentair FNS Plus 36 Filter Grids Buying Guide

Understanding Filter Grids

When I first learned about pool maintenance, I quickly discovered the importance of filter grids. These grids are essential components of a DE (diatomaceous earth) filter system. They provide a surface for the DE powder to coat, allowing for effective filtration of my pool water.

Why Choose Pentair FNS Plus 36 Filter Grids?

I found that the Pentair FNS Plus 36 filter grids are known for their durability and efficiency. They are designed to fit perfectly in the FNS Plus series, ensuring optimal performance. This compatibility means I can expect a seamless installation and operation.

Material and Construction

When considering filter grids, I pay close attention to the materials used. The Pentair FNS Plus grids are made from a robust material that withstands the harsh conditions of pool chemicals and UV exposure. My experience has shown that quality materials result in longer-lasting filters, reducing the frequency of replacements.

Size Matters

The size of the filter grids is crucial for proper filtration. The Pentair FNS Plus 36 grids are specifically designed for larger pools. I learned that having the right size not only improves filtration efficiency but also maintains the overall health of the pool.

Installation Process

Installing new filter grids can seem daunting, but I’ve found the process to be straightforward. With the right tools and a little guidance, I was able to replace my grids without professional help. It’s essential to follow the manufacturer’s instructions for best results.

Maintenance and Care

I’ve learned that regular maintenance extends the life of my filter grids. I make it a point to check and clean them periodically. This practice ensures that the grids remain free of debris and functioning effectively, leading to cleaner pool water.

Cost Considerations

While shopping for filter grids, I always compare prices to ensure I’m getting good value. The Pentair FNS Plus 36 filter grids may come at a premium, but I’ve found that investing in quality products pays off in the long run.

Where to Buy

I usually explore various options when purchasing filter grids. Local pool supply stores often have knowledgeable staff who can help me choose the right product. Online retailers provide a convenient alternative, allowing me to compare prices and read customer reviews.

In my experience, choosing the right filter grids is crucial for maintaining a clean and healthy pool. The Pentair FNS Plus 36 filter grids offer a reliable solution for effective filtration. By considering the factors outlined in this guide, I feel more confident in making an informed decision for my pool maintenance needs.

Author Profile

Laila Garza

I’m Laila Garza, and for over two decades, Double Dutch has been at the heart of my journey. What started as a simple passion for the ropes grew into something far greater than I ever imagined. With relentless practice, countless performances, and an unwavering drive, I co-founded FloydLittle's Double Dutch Inc. (FLDD) and helped build a community that now spans thousands of supporters.

In 2025, I embraced a new chapter. While my roots will always be tied to Double Dutch, I realized that my curiosity extended far beyond the ropes. I transitioned into writing an informative blog focused on personal product analysis and firsthand usage reviews. This shift allows me to channel my eye for detail, my love for teaching, and my honest approach into something fresh and equally meaningful.

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