A rigid inner core separates an effective paper pool filter replacement from one that folds under normal pump pressure. Flimsy pleats quickly buckle when water flow picks up, creating gaps that allow fine grit to bypass the filter and blow back into the pool. Once that cartridge collapses, the pump strains against the restriction, water turns cloudy, and hot afternoons get lost to troubleshooting instead of swimming. Thin paper also tears during basic hose rinses, turning routine maintenance into frequent, frustrating replacements.
Restoring clear water takes a cartridge that holds its shape under steady suction and seats cleanly inside the housing. Getting an exact seal comes down to checking the outer diameter, height, and core opening against pump specifications rather than trusting letter tags alone. Heavy-duty pleated media paired with reinforced end caps keeps circulation strong and withstands regular washouts without fraying. Take a look at the reliable choices ahead that fit securely, protect your pump, and keep the pool ready for swimming through 2026.
Intex Type B filter cartridge features a thicker, high-quality Dacron fiber paper for more ultimate filtration; Quantity: 9Made to keep your above-ground swimming pool water cleaner and clear all season longRecommended to replace as often as every 2 weeks for peak pump performance and maximum effici
Key specs
- Pump Compatibility
- Intex models 56611/E, 56621/E, 58621, 56633/E/EG, 56631
- Krystal Clear models 58621, FP2621, 520R
- Cartridge Dimensions
- 5.75 in x 5.75 in x 10 in
- Service Schedule
- Replace every 2 weeks
Pros:
- High-volume 9-pack provides enough cartridges for several months of routine biweekly replacements
- Thicker Dacron fiber paper design helps maintain steady pool water filtration and pump flow
- Sized at 5.75 by 10 inches to drop cleanly into large Intex above-ground filter pump housings
- Compatible with multiple Intex and Krystal Clear pump models including 56611, 56621, and 520R
Cons:
- Requires frequent replacement every two weeks to maintain pump efficiency
- Only fits large Type B pump housings and cannot be used in Type A or Type C filters
VALUE 2-PACK: Type D 2-pack filter cartridges for maximum value and convenience; Filter cartridges measure 4.75 inches long, 4.75 inches wide, and 5.75 inches tallULTIMATE FILTRATION: Contains extra pleats for ultimate filtration efficiency, providing a sparkling clean poolHEAVY-DUTY FILTER PAPER: U
Key specs
- Cartridge Dimensions
- 4.75 in x 4.75 in x 5.75 in
- Filtration Media
- Built with ultra-fine, heavy-duty paper featuring extra pleats designed to capture fine dirt and sand particles.
Pros:
- Ultra-fine heavy-duty paper media traps fine sand and dirt particles effectively
- Compact 4.75 by 5.75 inch profile fits standard Type D pool and spa housings
- Extra pleat count increases surface filtration area for clear water maintenance
Cons:
- Two-pack quantity requires reordering quickly when replacing on a biweekly schedule
- Listing does not specify pump model numbers, requiring physical measurement before buying
Set of 4 replacement Type A/C filter cartridges provide maximum convenience and value to outdoor pools and hot tubsContains extra pleats for ultimate filtration efficiency, which ensures sparkling clean water in the poolUltra-fine and heavy-duty filter paper construction captures and holds onto fine
Key specs
- Cartridge Designation
- Type A/C replacement
- Recommended Lifespan
- Replace every 2 weeks
Pros:
- Convenient 4-pack covers up to two months of standard biweekly cartridge swaps
- Dual Type A and Type C compatibility fits widely used above-ground pool pumps
- Pleated heavy-duty paper construction captures fine dirt, debris, and sand particles
Cons:
- Routine replacement needed every two weeks to prevent filter clogging
- Specific outer and inner diameter measurements are not detailed on the listing
【Perfect Match】Compatible with Hayward Star Clear Plus C1200 pool filter. Replacement for Hayward CX1200RE, Pleatco PA120/PA120-4/PA120-M, Unicel C-8412/C-8412RA, Filbur FC-1293/FC-1293M, Waterway Pro Clean PCCF-125, 817-0125N, Clearwater II 125. All manufacturers' names and part numbers are used fo
Key specs
- OEM Cross-Reference
- Hayward Star Clear Plus C1200 / CX1200RE
- Pleatco PA120 / PA120-4 / PA120-M
- Unicel C-8412 / C-8412RA
- Waterway Pro Clean PCCF-125 / 817-0125N
- Core Dimensions
- 8-15/16 in OD x 4 in ID x 23-1/4 in H
- Maintenance Schedule
- Designed for monthly rinsing and reuse, helping lower ongoing replacement costs compared to disposable paper cartridges.
Pros:
- Large 120 sq ft filtration surface area handles high-capacity pool filtration demands
- Spunbond polyester and reinforced inner core withstand high-pressure water circulation
- Extensive cross-compatibility with Hayward CX1200RE, Pleatco PA120, and Unicel C-8412
- Washable pleats only require monthly cleaning rather than frequent disposal
Cons:
- Tall 23-1/4 inch body is strictly for large canister systems, not small splash pools
- Substantially larger and heavier than standard above-ground disposable paper cartridges
VALUE 4-PACK: Type D 4-pack filter cartridges for maximum value and convenienceULTIMATE FILTRATION: Contains extra pleats for ultimate filtration efficiency, providing a sparkling clean poolHEAVY-DUTY FILTER PAPER: Ultra-fine and heavy-duty filter paper captures and holds onto fine dirt and sandONLY
Key specs
- Cartridge Designation
- Type D replacement (4 Pack)
- Media Construction
- Utilizes ultra-fine, heavy-duty paper with dense pleating to collect fine debris and sand in compatible pool and spa pumps.
Pros:
- Multi-pack of four cartridges provides an extended seasonal supply for Type D systems
- Extra pleats expand dirt-holding capacity for catching fine sand and silt
- Heavy-duty paper construction resists tearing during typical pool pump operation
Cons:
- Standard biweekly replacement cycle requires rotating through the pack regularly
- Outer and inner diameter dimensions are omitted from the technical specifications
POWERFUL FILTRATION PERFORMANCE: Innovated "Dirt-Locking" technology make the polyester fabric traps much more contaminants than regular fabric. This filter efficiently removes hair, leaves, dust, sediment, sand, etc. Enjoy your spa and hot tubEASY TO CLEAN: Uniformity trilobal fabric make it easier
Key specs
- Spa Compatibility
- Replaces PM_SPA-P154 spa filters
- Cleaning Frequency
- Replace or clean every week for daily spa use, or up to every 4 weeks under frequent operation.
- Media Technology
- Features uniform trilobal polyester fabric with dirt-locking capability to catch and release fine particles during rinse cycles.
Pros:
- Compact 4 by 3 inch size tailored for portable hot tubs and massage pool models
- Trilobal fabric construction traps fine sediment, dust, hair, and leaves
- Washable fabric allows repeated rinsing to extend operational use
- Backed by a 1-year manufacturer warranty for extra purchase security
Cons:
- Requires weekly replacement or cleaning when the spa is used on a daily basis
- Designed strictly for PM_SPA-P154 housings and incompatible with full-size pool filters
New Design - The filter element of the swimming pool adopts a dense trilobal structure, which can capture more pollutants in a shorter time and keep the swimming pool transparent.The Preferred Material - c filters for pool made with ultra-fine, heavy-duty filter paper.So keeps your water clean and f
Key specs
- Filter Size
- 4.21 in W x 4.21 in H x 8.07 in L
- Filtration Media
- Constructed with dense trilobal pleated fabric designed for water washing and repeated contaminant capture.
Pros:
- Dense trilobal pleated fabric captures fine particulates, sunscreen, and chemical residue
- Washable construction allows water rinsing for multi-cycle reuse before replacement
- Sized at approximately 4.21 by 8.07 inches to fit common Type A and C pump chambers
- High-flow design helps shield pool pumps and heaters from abrasive debris buildup
Cons:
- Listing provides limited brand documentation and no warranty details
- Two-pack supply requires prompt replenishment during heavy summer use
Type B 2-pack of filter cartridges for maximum value and convenienceContains extra pleats for ultimate filtration efficiency, providing a sparkling clean poolUltra-fine and heavy-duty filter paper captures and holds onto fine dirt and sandEvery cartridge only needs to be replaced every 2 weeks, prov
Key specs
- Filter Class
- Type B cartridge
- Replacement Frequency
- Every 2 weeks
Pros:
- Type B sizing delivers necessary filtration area for larger above-ground pump setups
- Dense pleating with ultra-fine paper traps floating dirt, dust, and fine sand
- Heavy-duty paper element maintains clean pool circulation during warm weather
Cons:
- Two-cartridge pack provides only about four weeks of use under standard biweekly swaps
- Height and diameter measurements are not listed and should be verified against your pump
A CONVENIENT REPLACEMENT - Cotton Tails Cartridge Replacements fit A & C paper cartridges, and are easy to maintain and clean. Simply place the filter media in your washing machine at the end of each season, and enjoy years of hassle-free filtration.FILTERS TO 3 MICRONS - A tightly-woven network of
Key specs
- Filtration Rating
- Filters down to 3 microns
- Filter Media Maintenance
- Woven polyethylene strands replace paper pleats. Machine wash at the end of each season for continuous multi-year use.
- Warranty Coverage
- 90-day limited warranty
Pros:
- Fine filtration down to 3 microns outperforms standard disposable paper cartridges
- Machine washable media can be laundered at season end for multi-year reuse
- Replaces disposable Type A and C paper cartridges inside existing filter chambers
- Includes a 90-day manufacturer limited warranty against defects
Cons:
- Requires washing machine cleaning rather than a simple hose spray
- Pressure gauge monitoring needed to determine when backwashing is required at 25 PSI
【Money-Saving Pool Filters】Due to the reusable design of xibulun pool filter cartridge, the cost of packaging logistics is greatly reduced, which will greatly reduce your cost of use. We estimate that the purchase cost of a single pool filter cartridge is about 20% lower than that of traditional dis
Key specs
- Pump Housing Compatibility
- Intex 28603EG, 28637EG, 28635EG, 28671EG
- Intex 58603E, 58604E, 56635E, 56636E, 56637E, 56638E, 58623
- Krystal Klear 02 and 12R
- Bestway III systems
- Refill Dimensions
- 8.26 in H x 4.33 in L x 4.33 in W
- Design Architecture
- Uses internal and external plastic mesh to clamp the replacement paper sheet, preventing pleat collapse under pump pressure.
Pros:
- Pack of 9 paper refills drastically reduces routine cartridge maintenance expense
- Dual plastic mesh frame design supports the paper to keep it from collapsing under flow
- Compatible with Intex 29000E and pumps using Intex 59900 or Bestway III cartridges
- Sized at 8 by 4.2 inches to match popular above-ground filter pump housings
Cons:
- Refill paper only works with the xibulun reusable frame, not standalone cartridges
- Requires manual frame disassembly and paper reassembly during every changeout
Last update on 2026-10-08 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API
How do I know which letter size fits my pool filter pump?
Check the stamped model code on your pump housing or your user manual to confirm the designated letter size. Summer Waves Type D cartridges measure 4.75 inches long, 4.75 inches wide, and 5.75 inches tall, while Type A/C options like xibulun measure 8.26 inches tall by 4.33 inches wide. Larger systems use distinct formats like Type B or designated replacements such as the Future Way C1200, which has an outer diameter of 8-15/16 inches, an inner diameter of 4 inches, and a height of 23-1/4 inches. Never guess your replacement size by sight alone because even a fraction of an inch allows unfiltered water to bypass the cartridge.
Can I wash and reuse paper pool cartridges, or do they require replacement?
You can rinse surface debris off many paper elements, but disposable cartridges eventually need replacement when the pleats pack full of fine silt. Some elements, like AquaSpa trilobal fabric, are designed to release stains during washing, though manufacturer guidelines recommend replacing them after 1 week under everyday use. Reusable filter models like xibulun provide a two-part frame to swap media easily, while alternatives like FlowXtreme Cotton Tails fit Type A and C housings and can be cleaned directly in a washing machine. If paper pleats show signs of flattening, tearing, or crushing inward under pump pressure, discard the cartridge immediately.
Why do paper pool cartridges collapse inward under water flow?
Cartridge pleats crush inward when heavy debris restricts flow and creates a strong pressure differential between the outer pleats and the inner core. Low-grade filter paper lacks structural rigidity, which pulls the pleat folds tight against each other and starves the pump of water. Choosing elements with thicker Dacron fiber paper, like Intex Type B cartridges, or extra pleats, like Summer Waves Type D and Type A/C units, helps maintain open water passages. When water cannot pull through the media, pump strain increases and cloudy pool water persists.
Will an aftermarket paper cartridge cause leaks or bypass in my filter housing?
Aftermarket cartridges prevent bypass as long as their outer diameter, inner core diameter, and total height match your housing specifications exactly. For example, Future Way C1200 replacements match Hayward StarClear Plus C1200, Hayward CX1200RE, and Pleatco PA120 specifications with exact 8-15/16-inch outer and 4-inch inner dimensions to prevent leaks. For standard above-ground pumps, choosing exact-fit Type A/C or Type B designs keeps end caps firmly seated against the canister seals. If your pump still struggles to clear cloudy water despite a tight cartridge seal, checking your overall setup against the right filter for a 15 ft Intex pool can confirm whether your pump size matches your pool volume.
What filter paper material keeps pool water clearest?
Thicker Dacron fiber paper and dense trilobal polyester structures trap fine particles without shedding fibers into your pool. Intex uses heavy-duty Dacron paper in its Type B cartridges to keep above-ground pool water cleaner throughout the swimming season, while dense trilobal paper in Type A/C cartridges captures contaminants faster by increasing available surface area. Specialty media like FlowXtreme Cotton Tails uses interlocking polyethylene strands to filter particles down to 3 microns. High-density pleats keep fine silt from blowing past the element and returning into the pool.
How often should I change my paper pool filter cartridge during 2026?
Cartridge lifespan depends on pump runtime, bather load, and the specific cartridge design you run. AquaSpa recommends replacing its compact spa cartridges every 1 week under daily operation, while larger above-ground pool paper cartridges typically require regular rinsing every few days during warm spells. Keeping multi-packs on hand, such as a 4-pack or 9-pack of Type B or Type A/C cartridges, prevents pool downtime when a filter clogs unexpectedly. If your pool water stays cloudy despite a clean cartridge, you may need to evaluate whether your circulation system matches your volume using a dedicated filter for a 5000 gallon pool.
