About the smallest chest freezer that will fit two ball locks in the well, leaving the space on the hump for the co2 bottle or extra storage, is 5 cu. ft.
I put this one together about a year ago. It’s a 5.0 Vissani from the Orange Box. I opted not to add a collar as I wanted the smallest unit, in all dimensions, possible. The keezer is in the space between the sofa in our living room and the dining table in the adjacent kitchen/dining space. This house is 3 beds, 2 baths, with separate utility/laundry room, all sqeezed into 1000 sq ft and no basement. Space is at a premium.
To mount the faucets I built a small box out of scrap plywood and mounted it on one corner of the lid, using 3” pass through shanks to pass the beer lines through the lid and into the box. There’s room (just barely) on the hump for a 5 lb co2 bottle and regulator, a homemade light fixture for a heat source, and a small fan to minimize condensation. The two kegs fit, diagonally, in the well with about 1\2” between them. I have had one ball lock and one converted pinlock in it but the second keg to go in was a press fit. There’s room in one corner of the well for a 16 oz aluminum beer bottle, filled with water, and stuffed into a beer koozie with the Inkbird temp probe inside the koozie, so the controller is measuring liquid temp, not ambient temp in the freezer.
The interior dimensions are:
20 1/8” wide
16 9/16” deep
27 1/4” tall in the well, 19 3/4” over the hump
The well is 13” wide, the hump is 7 1/8” wide.
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