42L This is for a stainless steel cup insert, the following info is below:
The Tigress® Stainless Steel Cup Insert holds today's larger cups and tumblers and keeps them from spilling in your boat or vehicle. This Tigress boat cup holder fits 30 oz. and 20 oz. double-wall, vacuum-sealed stainless cups and tumblers, including Yeti®, Tervis®, Engel®, and more. No more spilling your favorite drink because of a small cup holder! The Tigress Stainless Steel Cup Insert uses a 4-1/8" hole saw to install and has a bottom drain tube.
Manufacturer model #: 88586-2.