What with holiday bread baking needing double batches, I had to split my dough between two 3.5 L containers in order to fit it into the Brod & Taylor proofer. Then, too late, I was browsing the B & T website and found that they sell an alleged 6L plastic box that fits in the proofer; in fact they say that two of them will fit stacked up. https://brodandtaylor.com/products/proofing-container
I ordered one of the boxes, just in time (they are currently sold out for a while).
The side of the box is marked up to 5 qt (not L). If i'm careful, I can get 6 L of water into the open box. But putting the lid on pushes out 250-500 ml of water.
The box should be OK for my double batches (usually 1/10 of Hamelman's metric quantity for 20 - 25 loaves or a double batch from "The Rye Baker"). But I think B & T ought to market it as 5 L, maybe 5.5 L.
I have had one of B&T's proofing containers for a few months - maybe a year. It is a smaller version of the "bus tubs" that are standard equipment for bulk fermentation in bakeries. I like it a lot. It is the right container if you prefer "spiral folds" of your dough, especially.
It does fit well into the B&T Proofing Box. In my experience, it's the right size for about 2kg of dough with room to double.
I'm sure you will enjoy using it.
David
If you have a restaurant supply store near you, you might be able to save some money by getting a regular covered food pan. They come in sizes almost too numerous to mention. Here's an link, just as an example, for a pan that is the same size, but you would need to get a covered version. https://www.webstaurantstore.com/choice-1-2-size-4-deep-clear-polycarbonate-food-pan/176FP124CL.html
We have a Shamrock Outlet near us, open to the public, that has lots of pans. Check restaurant supply stores near you.
Dave
Before I got the B&T container, I tried using some polycarbonate ones. I found them unsatisfactory. Polycarbonate is stiffer. The lids were hard to get on and off. They never really fit right. Maybe other brands are better, but that was my experience.
David
I’ve been using these smaller cubic style Cambro 4QT containers. I fit 2 in the proofer. I’m on the list for buying one of these!