Linear Diffuser -

Linear Slot Diffuser LSD-SS STAINLESS STEEL LINEAR SLOT DIFFUSER · Learn More frameless aesthetic, or surface mount which allows for the easiest

For the puddle lighting, you have to take the door card off and cut out the slot where they would be fitted with something like a dremel

frameless slot diffuser USAire, Linear Mud-in Slot Diffusers, 34 Slot Width, 100 Long

sheet metal slot punch In this video, InviAir's Linear Diffuser Installation is shown for diffuser-in application