Go with this Universal Economy Extrusion and Lens on your surface mount applications or when additional light protection is needed. It provides sufficient heat dissipation and diffuses light enough for a great economical option.

Features
Surface mount extrusion perfect for remodel applications
Low profile housing design for limited space
This extrusion should be installed in discreet places as there will be dotting
Frosted lens protects the light source while evenly diffusing light
Lightweight anodized aluminum extrusion provides excellent heat dissipation
Field cuttable extrusion and lens
End caps available for a tailored look
Compatible with 10-12mm wide tape light (all indoor SKUs)
Dimensions (H x W): 1/4" (7mm) by 5/8" (16mm) with an internal channel width of 1/2" (13mm)
Six holes available for screw install