Baleen 135 sq. ft. Pool Filter Cartridge - Replacement for Unicel UHD-SR135, Pleatco PSR135-4 & Filbur FC-2560 | Compatible with Most Pool and Spa Systems | Model AK-8021 | Perfect for Backyard Swimming Pools and Hot Tub Maintenance

Baleen Filters 25 sq. ft. Pool Filter Replaces Unicel C-4326, Pleatco PRB25-I... Baleen Filters 20 sq. ft. Pool Filter Replaces Unicel 4CH-20, Pleatco PSG25P4... Baleen Filters 125 sq. ft. Pool Filter Replaces Unicel C-8326, Pleatco PSD125... Baleen Filters 50 sq. ft. Pool Filter Replaces Unicel C-4950, Pleatco PRB50-I... Baleen Filters 60 sq. ft. Pool Filter Replaces Unicel 6CH-961, Pleatco PJW60T... Baleen Filters 35 sq. ft. Pool Filter Replaces Unicel C-4335, Pleatco PRB35-I... Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 36 4.8 out of 5 stars 11 3.2 out of 5 stars 15 4.0 out of 5 stars 68 5.0 out of 5 stars 4 4.8 out of 5 stars 10 Price $25.99$25.99 $26.69$26.69 $70.03$70.03 $49.98$49.98 $40.98$40.98 $48.57$48.57 Area 25 SQ FT 20 SQ FT 125 SQ FT 50 SQ FT 60 SQ FT 35 SQ FT Made with Reemay Fabric ✓ ✓ ✓ ✓ ✓ ✓ Washable Fabric ✓ ✓ ✓ ✓ ✓ ✓ Model AK-3011 AK-9002 AK-70013 AK-3049 AK-90195 AK-3015 NSF Certified ✓ ✓ ✓ ✓ ✓ ✓