Compatible Model: PBF40M Spa and Hot Tub Filter Replacement Cartridge Compatible with PBF40M, PBF40-M, Bull Frog Wellspring 30 Coreless 10-00282 filter cartridge. PBF40 Spa Filter Cartridges Size: Top Hole: 3 3/8 inch (3.375"); Bottom Hole: 4 1/2 inch (4.5"); Diameter: 8 inch (8"); Length: 6 1/4 inch (6.25"). Contains 30 square feet of premium spunbond filter material. Powerful Filtering Performance: Innovated "Dirt-Locking" technology makes the fabric traps much more contaminants than regular fabric. This filter efficiently removes hair, leaves, dust, sediment, sand, etc. Enjoy clean leisure time in your pool and spa. Easy To Clean: MRSTOT PBF40M Spa Filters are designed to be long lasting and easy to clean so you can keep your pool and spa crystal clear. It is recommended that you replace cartridges every 1-2 months to maximize your spa's performance. After-sales Guarantee: If you have any dissatisfaction with the product, just contact us by email, we will sincerely seek the most satisfactory solution for you, your satisfaction is our pursuit, to help you solve the problem is our mission! PBF40M Spa and Hot Tub Filter Replacement Cartridge Compatible with PBF40-M, Bull Frog Wellspring 30 Coreless 10-00282 filter cartridge.

Easy to Clean Cartridges
Remove your PBF40M Filtration cartridge and clean it quickly and easily to give the cartridge new life and superior filtration. Because you can easily clean your PBF40 filter, each filter lasts longer. This ultimately saves you money on filter costs every season. We recommend having two filters on hand for zero filtration downtime while cleaning and to extend the life of each filter.

Specifications
Length: 6 1/4"
Top Hole: 3 3/8"
Bottom Hole: 4 1/2"
Outside Diameter: 8"
Core: PVC Core
Filtration Area: 30 sq. ft.
Include 2-pack filters

NOTE: The bottom opening is larger to fit the notch of spa mounting assembly