This part is a Hydro Air 1" Top Draw Air Control Stem Assembly only.. It measures about 2 5/8" Across the top and the threaded hole this would screw in would be about 1 3/8" Wide.. the shaft from the bottom of the lid would be about 2 1/2".. See attached...

This part is a Gate Valve, 3 piece, 1-1/2" Slip x 1-1/2" Slip, Slice Valve..  3-Piece Gate Valve AssemblyWith plastic paddle. Reliable 3-piece body design allows unrestricted water flow and is easily disassembled for in-line servicing. Internal...

Poly Jet Series1"s air x 1"s water, harness bodyHole size required is 2-5/8"

This part is a 1 1/2" Street X 1 1/2" Slip X (4) 3/4" Smooth Barbs manifold and a single barb plug in case you only need 3 barbs instead of 4. The Manifold receives a 1 1/2" pipe on the slip side which would measure about 1 7/8"...

You are buying an Old Style Adjustable Mini Jet 5/16" Nozzle Insert made by Waterway only the face not included. This Nozzle fits behind a Waterway Old style back neck jet with the 4 prongs that fit into the Nozzle. These jets are removed by prying...

This filter is 9 3/4" Tall x 4 5/8" Wide and is closed on the top and has a 1 1/2" mpt thin threaded nipple that measures about 1 13/16" across the threads. This filter fits some of the Jacuzzi Whirlpool hot tubs that are found under the names Jacuzzi...

Double pole contactor CoilContact 120 VAC 30amp res

"Magicmend" Pipe extenderSimply cut the bad fitting and remove it from the system. Glue the correct size Magicmend into place and replumb your new fitting

This 115V Laing E-10 pump with a 3/4" Barb Suction and Pressure Side which measures about 3/4" Outside Diameter and the hose is 3/4" Inside Diameter  is compact and lightweight, less than 5 lbs. It is whisper quiet, highly efficient and designed...

This part is a Tee, 2" Slip x 2" Slip x 2" Slip.. The ID of each connection is 2 3/8" and it will accept 2" Flex pipe in each connection.. PVC Pipe Fitting Type Tee First Plumbing Connection Size 2" First Plumbing Connection Type Slip...