Waterway 50 Sq Ft Dyna-Flo skim filter in gray includes pleated filter.
This housing features (2) 2" Slip plumbing connections that would measure about 2 3/8" Inside Diamater.. 
WW5106557 Features:

• 50 Sq Ft
• 6.875" Hole size required
• 2" Slip fittings in/out
• 15 GPM
• 19-5/8" Length (Top of weir ring to bottom of canister)

Here are a few addional items you might need for this housing installation:

Spin Kit, 2" Manifold Coupler Kit Old Plumbing to New Hot Tub Spa Part for 1-2 Manifolds Spin To Win

Plug 2" Spigot PVC Plumbing

Hot Tub Spa 90° ELL 2" Street X 2" Slip Plumbing PVC Fitting How To Video