Check 45° cabinet surface mounted led profile, you could use the LEDLUZ offers a large variety of high quality LED Strip Channels for cabinets, stairs, ceilings, closets, floors, walls, and even around corners.
ALP014-R
3m/30000mm Surface Aluminium LED Profile for Housing Flexible LED Strip
ALP073
Micro led profile 7mm x 9mm
ALP016-R
ALP016-R is a 90 degree corner LED Strip Aluminum Profile that is ideal for LED strip lighting fixtures in product display units, and under counter lighting.
ALP096
narrow led profile for 3mm led strip
ALP137
Low profile led under cabinet lighting
