The Titon FireSafe® Single Air Brick is designed to be built into external wall types during construction and can easily be connected to both 204×60mm ducting Fire Classification as set out in Approved Document B (fire safety) volume 1: Dwellings, 2019 edition. Constructed from sheet steel (A1) and polyester powder coated to classification A2-s1, d0. 3 Standard Colours available.