--- product_id: 586533105 title: "Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20\" x 4.5\", 25 Micron, Pack of 2, White" brand: "pentek" price: "R3152" currency: ZAR in_stock: true category: "Pentek" url: https://www.desertcart.co.za/products/586533105-pentair-pentek-dgd-7525-20-big-blue-water-filter-20 store_origin: ZA region: South Africa --- # Fits All 20" Big Blue Housings 25 Micron Precision Filtration Dual-Gradient Density Tech Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White **Brand:** pentek **Price:** R3152 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your home’s water game with Big Blue purity—because clean water isn’t a luxury, it’s a lifestyle. ## Quick Answers - **What is this?** Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White by pentek - **How much does it cost?** R3152 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/586533105-pentair-pentek-dgd-7525-20-big-blue-water-filter-20) ## Best For - pentek enthusiasts ## Why This Product - Trusted pentek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Biannual Swap:** Replace every 6 months or when pressure drops to maintain peak water quality and appliance protection. - • **Certified Peace of Mind:** NSF/ANSI Standard 42 tested and certified for trusted filtration performance you can count on. - • **Optimized for High Flow:** Big Blue 20-inch size and advanced density gradient design deliver superior filtration without sacrificing water pressure. - • **Triple Dirt-Holding Power:** 3X the capacity of standard sediment filters means fewer replacements and uninterrupted clean water flow. - • **Pure Polypropylene Construction:** 100% chemical-resistant material ensures no taste, odor, or color contamination—just crisp, clean water. ## Overview The Pentair Pentek DGD-7525-20 Big Blue Water Filter is a 20-inch dual-gradient density sediment cartridge designed for whole-house filtration. Made from 100% pure polypropylene, it removes dirt, sand, and silt without affecting water taste or odor. Certified to NSF/ANSI Standard 42, it offers 3X the dirt holding capacity of similar filters and fits all standard 20" Big Blue housings. Ideal for residential and commercial use, it ensures high flow rates and long-lasting performance with recommended replacement every 6 months. ## Description DGD Series Cartridges are manufactured from 100% pure polypropylene and are sized for use in Pentair Pentek Big Blue Filter Housings. DGD Series Cartridges are designed for purity and will not impart taste, odor or color to the liquid being filtered. Additionally, the polypropylene construction provides superior chemical resistance. The DGD Series' advanced design combines selective final filtration with appropriate pre-filtration to achieve up to three times the dirt holding capacity of similar size sediment cartridges and even greater capacity than standard spun or string-wound cartridges. The larger diameter of the filter reduces the particle load, allowing it to operate at higher velocities. The effective filter depth is increased to a full 233%. This increased depth provides very high particulate reduction efficiencies and added loading capacity. The design and performance characteristics of the DGD Series Cartridges make them an excellent choice for all residential, rural, municipal and commercial applications. ## Features - KEEP YOUR WATER CLEAN and protect your appliances by removing dirt, sand, silt and particulates. DGD Big Blue water filter cartridges are designed for purity and will NOT impart taste, odor or color to your water - IDEAL HIGH-FLOW PRE-FILTER. Filter density increases toward the cartridge's center resulting in superior particulate reduction and 3X the dirt holding capacity of similar size sediment cartridges - TESTED AND CERTIFIED BY NSF INTERNATIONAL to NSF/ANSI Standard 42 for your peace of mind. Manufactured with 100% pure polypropylene - SIZED FOR USE IN ALL 20 inch Big Blue filter housings (or other heavy duty filter housings) and can replace any 20 inch x 4.5 inch sediment filter cartridge - REPLACE EVERY 6 MONTHS or when you notice a drop in water pressure or water quality for best results and performance ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CJCWRRVH | | Best Sellers Rank | #2,319 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Replacement Under-Sink Water Filters | | Brand Name | Pentek | | Customer Reviews | 4.7 4.7 out of 5 stars (2,381) | | External Testing Certification | ANSI | | Global Trade Identification Number | 50051678356437 | | Item Dimensions D x W x H | 4.5"D x 4.5"W x 20"H | | Item Type Name | Pentair Pentek DGD-7525-20 Big Blue Water Filter | | Manufacturer | Pentair | | Manufacturer Part Number | 155356-44 | | Material Type | Polypropylene (PP) | | Model Number | DGD-7525-20 | | Number of Items | 2 | | Product Benefits | Protects appliances by removing impurities, high-flow pre-filter, third-party tested and certified, compatible with various filter housings | | Unit Count | 2.0 Count | ## Product Details - **Brand:** Pentek - **External Testing Certification:** ANSI - **Material:** Polypropylene (PP) - **Product Dimensions:** 4.5"D x 4.5"W x 20"H ## Images ![Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White - Image 1](https://m.media-amazon.com/images/I/51D0z2TV99L.jpg) ![Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White - Image 2](https://m.media-amazon.com/images/I/81Nl6X4thyL.jpg) ![Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White - Image 3](https://m.media-amazon.com/images/I/71O4K2WiO3L.jpg) ![Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White - Image 4](https://m.media-amazon.com/images/I/61qZ6hYaZ4L.jpg) ![Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White - Image 5](https://m.media-amazon.com/images/I/71ZZBSPbwML.jpg) ## Available Options This product comes in different **Size, Style** options. ## Frequently Bought Together - Pentair Pentek DGD-7525-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 25 Micron, Pack of 2, White - Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Pentair Pentek RFC-20BB Big Blue Carbon Water Filter, 20-Inch, Whole House Heavy Duty Radial Flow Carbon Replacement Cartridge with Granular Activated Carbon (GAC) Filter, 20" x 4.5", 25 Micron --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/586533105-pentair-pentek-dgd-7525-20-big-blue-water-filter-20](https://www.desertcart.co.za/products/586533105-pentair-pentek-dgd-7525-20-big-blue-water-filter-20) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-10*