Darlly 30021 C-3302 PIN3PAIR Spa/Pool Filter Cartridge

Type:	Filters
Mfr	Darlly Filtration
Mfg Part #	30021
Hzn Part #	17-777-2178
Pleatco Part #	PIN3PAIR
Unicel Part #	C-3302
Top Style:	Open
Top Dimension:	1-1/8"
Bottom Style:	Open
Bottom Dimension:	1-1/8"
Length:	3-11/16" (94mm)
Square Feet:	2
Outside Diameter:	3-1/8" (79mm)
Works With:	Intex "E" Skim Filter

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TAGS: darlly, filters

Details

(DISCONTINUED BY MANUFACTURER)

SEE REPLACEMENT PART: OBSOLETE

This Darlly 30021 C-3302 PIN3PAIR Spa/Pool Filter Cartridge helps restore filtration performance in compatible spa or pool systems using the matching cartridge size and reference codes 30021, C-3302, PIN3PAIR. The cartridge is used to capture debris as water circulates through the filter system, helping maintain clearer water and more consistent flow when the old element has become clogged, damaged, or difficult to clean. Because filter cartridges can look similar across brands and models, the best approach is to compare the part number, end-cap style, length, diameter, and center opening against the cartridge being removed before installation. Replacing the cartridge on a normal maintenance schedule also helps reduce strain on circulation equipment and can improve overall water care results.

Replacement cartridge for compatible spa and pool filter housings using 30021, C-3302, PIN3PAIR references
Helps trap dirt, hair, oils, and fine debris during normal water circulation
Useful when the existing cartridge is stained, collapsed, cracked, or no longer rinses clean
Verify dimensions, end-cap configuration, and center core style before ordering
Recommended for regular maintenance to support water clarity and equipment flow

Darlly Filtration – Pool & Spa Filter Cartridges and Replacement Filters

Who is Aladdin Equipment?

Darlly Filtration is a global leader in the manufacturing of pool and spa filter cartridges, known for producing high-quality, OEM-compatible replacement filters. With advanced engineering and large-scale production capabilities, Darlly supplies filters used by major brands worldwide. Their reputation for consistency, performance, and value has made them a trusted choice for both residential and commercial pool and spa owners.

What products does Aladdin Equipment specialize in?

Darlly specializes in filter cartridges and replacement filters for pools, spas, and hot tubs. Their product lineup includes pleated filter cartridges designed to capture fine debris, dirt, and contaminants while maintaining optimal water flow. Darlly filters are available in a wide range of sizes and configurations, making them compatible with many leading equipment brands.

Why choose Aladdin Equipment parts for your pool or spa?

Darlly filters are known for high filtration efficiency, durability, and cost-effective performance. Their cartridges are engineered to provide excellent water clarity while extending filter life and reducing maintenance frequency. Customers choose Darlly for reliable replacement filters that offer a strong balance of quality, compatibility, and value.

How do you identify and choose the correct Aladdin Equipment part?

To select the correct Darlly filter, it’s important to match your existing cartridge’s dimensions, including length, diameter, and top/bottom configuration. Cross-referencing part numbers or filter model compatibility ensures proper fit and performance. You can use our FILTER FINDER to help you find the proper filter in minutes. Choosing the correct filter helps maintain water clarity, improve system efficiency, and protect pool and spa equipment.

Need help finding the right Aladdin Equipment part?

At Bath & Spa Parts Online, we carry a wide selection of Aladdin Equipment pool, spa, and bath parts ready to ship. Can’t find what you need? Contact our Product Specialists at 800-918-9143, use the live chat, or visit our Contact Us page. For installation guides, part diagrams, and troubleshooting resources, visit the Bath & Spa Parts Online Knowledge Base for expert support.