Apart from the basic treatment of the wood, it may need further treatment over the years to protect from the weather. We can also preserve or paint the wooden train to a colour of your choice. The overall construction may also be slightly different.If that is the case then we would send you photos of the finished item before sending. If you require moving wheels, please message me for a price. The sizes are as follows. Train inner section for plant pot : 35cm by 22cm. And now a bit about packaging. If it is possible we will use packaging that has been sourced either from my own packaging or from other establishment. Where this isn't possible we will source from a recycling company. We are a small dedicated company dealing with the sale of mainly DIY items. Because of this if requested we can make a bespoke item for you if you prefer. Although we can't give you professional advice, when we can we will give general advice on how to install what you've bought from us. This maybe information we send out with the item. You can also message us if you need more information on the product we sell.