Expand the function of standard troffer and panel luminaires by means of air-handling functionality. 2-slot and 4-slot models are available to suit both 400 mm and 600 mm wide grids, and the simple tool-free installation process ensures a fast and painless retro-fit operation whatever the application. AHF kits also allow for easy access to the luminaire for maintenance or replacement, as well as providing a smooth outward appearance.