About the aluminum profile for led lighting strips, we have 5V, 12V, 24V. Regular length 0.5M,1M, 1.5M, 2M, 2.5M, 3M. The cover with PC material. Diffuser cover, clear light cover, Opal cover etc optional. The light transmittance up to 95%. Strike proof, and the waterproof can meet IP68.