I could not find a simple vertically orientated holder for a full size servo - dimensions 20x40x40mm - So here it is. I have recessed two holes in the bottom to accept hex head bolts M3 size. This was so that I could mount it onto my Sainsmart robot. I will upload pics soon (if I remember!) - This has also 4 vertical holes and slots to accept nuts to bolt the servo down firmly. This has been through some print iterations so it should be OK! Let me know please cheers James