An invoice, bill or tab is a commercial document issued by a seller to a buyer, relating to a sale transaction and indicating the products, quantities, and agreed prices for products or services the seller had provided the buyer. Payment terms are usually stated on the invoice.
When a vent is less than 10 feet high, the vent should be at least as large as the flue collar outlet.b) Vents for draft hoods or flue collars 12 inches in diameter or less should NOT be reduced more than one pipe size.
Standard Toilet Sewer Pipe Sizes. Always check local plumbing codes before you begin a plumbing project. If your home has one or two toilets, the standard toilet sewer pipe size is 3 inches. The sewer pipe connects to the toilet flange beneath the toilet, and this flange is a standard 3 inches. You cannot reduce the size of the pipe anywhere along the piping. If your home has three or more toilets, you must install a 4 inch sewer pipe for adequate drainage.