Lamba Brothers is a manufacturer and supplier of Ducting & Venting Products. Herein, we offer TDF Ducting or simply TDF (Transverse Duct Flange) which is a slip-on flange that can be fixed onto the main duct. This flange is separately manufactured and its duct gauge can be same or more. These are to be purchased separately from the duct arrangement. These are also known as "f" corners and are easier to use. These can be snapped into a place quickly and do not require any crimping. Our Ducting & Venting Products have bolt holes which allows fixing them with the other structure. We also offer welded duct, which is also known as grease duct. It is connected to the Kitchen Exhaust hood.