Our range of 4.0m by 5.0m cabins can be found in both 34 and 44mm wall logs providing the necessary levels of insulation and sturdiness as required. Please note our sizes, in this case, 4.0m by 5.0m, refers to the log length not the internal or external measurement. If you are in need of a particular size why not try the cabin search facility allowing you to filter down our comprehensive range of cabins by type, log thickness, width and depth. And at any time, should you have any questions, please don't hesitate to call the office, we will be pleased to hear from you. Contact details here.