I have two really heavy duty cases manufactured by "Cabbage Cases". Each has 1" thick high-density foam on all internal surfaces, carry handles on each side and on top. I used these to transport my Losmandy HGM-200 GEM around and each has additional foam inserts to suit.
Dimensions in inches (LxWxH):
#1: External: 20x15x24, Internal: 17x12x20, Weight: 30lb
#2: External: 19x15x19, Internal: 16x12x16, Weight: 25lb
Asking $175 for #1 and $150 for #2 or $300 for the pair. All prices include shipping in CONUS.
If you are looking for transport cases of this size, then you will not find higher quality or better condition than these.
Thanks for looking