Our 3” thick large walnut slabs are air dried after cutting. It takes 3 full summers to air dry a slab. Our slabs are listed by cut date and by average size. We have over 100 walnut slabs in our inventory at any given time and almost none stay unsold long enough to dry fully. After 1 summer of air drying we can kiln dry for you in our Nyle de-humidification kilns, however this is a slow process that usually takes 3-4 months. Of course you are welcome to buy them as is and dry them yourself . Please call us with any questions and to get freight quotes. We ship regularly throughout the US and have substantial discounts with the freight companies.