- 1000mm Extension 201 stainless steel exhaust/flue pipe. Designed for use with Sealey IR13/IR16. Ø100mm. Quantity: 1 Piece. This Sealey exhaust extension pipe is made from durable 201 stainless steel and measures 1000mm in length. It is specifically designed for use with the Sealey IR13/IR16 models and has a diameter of 100mm. Dapetz Ltd is an independent family-owned on-line retailer specializing in Tools, Hardware, and Consumables. We offer competitive prices by buying in bulk and keeping overheads low, ensuring the best customer service.