The wall, mounting bracket kit is used to attach 220mm plastic duct to any existing structure. It is simply a right angle bracket (Part No: TC1279-104) with slots for fitting to steel work or walls, plus a wall mounting plate (Part No: TC1279- 104A) to allow 37mm of sideways adjustment. On its’ horizontal face it accepts a 220mm duct mounting bracket (Part No: TC1279-13); which is supplied.