White cylindrical pool filter cartridge with blue end caps and label featuring a smiling cartoon filter character
cylindrical white pleated filter cartridge with blue rims on top and bottom standing upright on white background
cylindrical replacement filter cartridge with blue plastic ends and pleated filter material visible around the circumference
cylindrical replacement filter cartridge with blue plastic end and pleated white filtering material on white background

Unicel 45 sq. ft. Replacement Filter Cartridge | C-5345

4.0 ★★★★ (35) ▾
Regular price$38.99
/
$9.99 flat shipping on orders under $100.
Unicel Authorized Dealer Full Manufacturer Warranty Support
No Hassle Returns 30 Days Paid Returns
SKU:
C-5345
  • Poolaroo Promise

    • Fast Shipping — Ships in 1–2 Business Days
    • 30-Day Risk-Free Returns — We Pay Return Shipping, No Restocking Fees
    • Powered By People Who Care - No Faceless Conglomerate

About This Item

The Unicel C-5345 is a 45 sq. ft. replacement filter cartridge engineered to precise dimensional tolerances for spa and pool filter systems. With 230 pleats of 3 oz. Reemay 2033 polyester media, it delivers exceptional surface area and long-lasting filtration performance — capturing fine debris while maintaining strong water flow.

Specifications

Filter Area 45 sq. ft.
Length 10 1/8"
Outer Diameter 5 5/16"
Top Inner Diameter 2 1/8"
Bottom Inner Diameter 2 1/8"
Material 3 oz. Reemay 2033
Pleat Count 230
Top Cap: Open
Top Cap
Bottom Cap: Open
Bottom Cap

Fits Into:

OEM Brand Product Name Part Number Notes
Leisure Bay Spas S2/G2 Spa
Waterway Plastics 45 sq. ft. Top Load 817-0014
Rec Warehouse 173584
Pentair – Rainbow Plastics R173584
Also compatible with select models from: Garden Leisure, Dynasty Spas, Rocky Mountain Spas

(This is not an exhaustive list.)

Also known as: C5345

Format: you@example.com

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Unicel Filter Cartridges and DE Grids

About Unicel Filter Cartridges and DE Grids

The "Gold Standard" of Replacement Cartridges
For over 50 years, Unicel (Meissner Mfg.) has been the professional's choice for restoring pool water clarity. While generic "knock-off" filters often use cheap, fuzzy fabric that clogs quickly, Unicel uses genuine Reemay® Filtration Media. This patented synthetic fiber features a unique trilobal shape that traps significantly more dirt and oils without choking your pump's water flow. Based in California, Unicel doesn't just copy filter dimensions; they engineer them to strict Original Equipment Manufacturer (OEM) specifications. This ensures a "lock-tight" fit in your filter tank, preventing debris from bypassing the system and returning to your pool.

Why We Trust Unicel Filter Cartridges and DE Grids
Genuine Reemay® Media: Uses continuous trilobal fibers to capture microscopic debris without restricting water flow.

Precision "Exact Fit": Engineered to match your tank's original specifications for a 100% leak-free seal.

Made in the USA: Manufactured in California with heavy-duty urethane end caps that resist cracking under pressure.

Longer Lifespan: Sharp, rigid pleats resist collapsing during cleaning, meaning you buy fewer replacements over time.

More about Pool and Spa Filter Cartridges

Complete Your Pool Care Routine

Essential Pairing
Filter Cleaning Chemicals for All Types of Pool & Spa Filters

Using a specialized cleaner like FilterWash helps release deeply embedded oils and minerals that standard rinsing leaves behind.

Shop Filter Cleaning Chemicals for All Types of Pool & Spa Filters
Highly Recommended
Pool and Spa Plumbing Lubricants

Every time you open your filter tank, you must lubricate the O-ring to prevent dangerous leaks and ensure a watertight seal.

Shop Pool and Spa Plumbing Lubricants
Pro Tip: Don't Forget
Pool Test Kits and Water Analysis Tools

Balanced water pH prevents calcium scale from hardening your filter fabric and ruining your new cartridges.

Shop Pool Test Kits and Water Analysis Tools

Recently viewed