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This filter is this most popular size and fits 70% of all tubs it is a 50 Square Foot Filter Cartridge that is 4-15/16" Outside Diameter x 13-5/16" in Length. It has a hole in the top and the bottom that are 2 1/8". Don't just order this filter though be...

You are buying a 2" Heater Split Nut which includes the split nut and (2) Screws for use with a 2" Heater Union which would measure about 3" Edge to edge on the threads this split nut screws on. The Heater Flange Split Nut mounts to the heater tube...

You are purchasing a SC-25 Buss or Cooper Bussman Fuse that is 1 5/8" Long X 3/8" wide found on many Balboa , Gecko, Hydroquip , ACC, Nuwave , Len Gordon , Spa Builders and more Brand Spa Hot Tub Boards and control packs. This Fuse can also be found...

This part is a Barb Adapter 3/4" Barb x 3/4" Street or 1/2" Inside Slip.. The means a 3/4" Inside Diameter tube would glue over the barb side while a 1/2" pipe which is 3/4" Outside Diameter would glue inside or a 3/4" Slip fitting that measures 1"...

You are buying a 5.5KW DuPont Teflon® Coated Flow Thru Heater Element for 230V or 115V Applications that features the bend in the back of the element needed to fit the Balboa M-7 heater tubes. This also fits Gecko, ACC, and most other standard...

This Seal Kit PS-3868 Seal is an Upgraded Better Viton Carbon Graphite Version of the PS-201 Seal used Primarily in Vico & Sta-Rite Wetends.It is 1 3/8" Across the back of the Spring Seal part that goes onto the Impeller and the Ceramic & Rubber...

This part is a Salt/Ozone resitant PS-3865 which is the upgraded Better version Viton Carbon Graphite version of the PS-1000 Seal. This Seal is used Primarily in Waterway Brand Wet Ends. It is 1 3/8" Across the back of the Spring Seal part that goes...

This Seal is a Salt/Ozone resistant PS-3867 which is the Better - Viton Carbon Graphite version of the PS-200 Seal used Primarily in Aqua-Flo Wet Ends and Waterway "Viper" Wet Ends. It is 1 1/4" Across the back of the Spring Seal part that goes onto...

This part is a 1 1/2" Pump Union Split Nut Repair Kit which includes the split nut and (2) Screws for use with a 1 1/2" Pump Union. The Pump Union Split Nut that measures about 2 7/8" on the outside and mounts to the existing Pump Union Body using 2...

Inside Pipe Repair Glues Inside 2" Pipe & into 2"spg Fittings Magic Mend Simply cut the bad fitting off of 2" hard pipe and remove it from the system. Glue the 2" size Magicmend into the pipe and replumb your new fitting

This item is a 1/2" Slip x 1/2" Slip pvc coupler the inside diameter of the coupler is 3/4", This is a chart for the outside of your plumbing pipes so you can figure out what size parts to order. Note: The actual size a part is called is not the actual...

This part is a Gasket Heater Union Mo-Flo, 2" ID x 2-3/4" OD Cal Spa with a 2-5/8" Center to Center Small Lip.. The Lip is about 2-5/8" Center to Center but is really thin and tiny meaning the other style gasket with a thick 2-5/8" lip will not work.. ...