VAL-CO promoted their new light-trap fan transition kits at the 2023 PEAK trade show.  These can be installed either as a flush mount or intruding ithrough the wall. Both options eliminate the need for a plenum (“doghouse”).  The light trap hinges to allow access to the fan for cleaning and maintenance.  Fans are available with blades from 12 inches to 54 inches in diameter and are ideal for retrofits.  Flush-mount kits do not intrude into the aisles facilitating access and the management of flocks reared in houses equipped with aviaries.  Given the need for light control at higher latitudes, the VAL-CO fan transition offers advantages for both initial installation and for retrofits.