Hi, this is Laura with Kohler Co. I am happy to assist you with your question. The supply line needed is 7/8" at the tank and 3/8" at the wall. Thank you for choosing Kohler.
Hello, my name is Jay with KOHLER Customer Service. I am happy to assist you with your toilet tank question. The 4899-0 is not insulated. We design our products with customers like you in mind. We would like to speak further about your concern. Please call our Customer Care Center at 1-800-4KOHLER. (1-800-456-4537). Thank you for choosing the Bold Look of KOHLER.
While it may fit (the attach points seemed to be standard Kohler dimensions), I wouldn't recommend it. The stool and tank are designed to work in tandem to optimize flush. You likely wouldn't get a satisfactory flushing result. And at worst, you would get a very poor result and may even lead to overflow situations.
Thank you for your inquiry. I am sorry but there is no 10" rough in bowl that the 4899 tank will fit.
Thank you for your inquiry. I wish I could offer you a round bowl , but we do not manufacture a round bowl to go with this Tresham Tank. The closest alternative I could find is the K-3511-0 KOHLER Memoirs 2-Piece Round-Front Toilet in White, with a link below.