Black colored covers have a light transmittance of 25% . When the light source is turned off, they turn black, opening up completely new arrangement possibilities. 

Basic for profiles:
- A, B, C, D, G, H, Y,  Z, Cosmo, Reto, Tiano, Flaro

Double for profiles:
- Sileda, inSileda, Dileda, inDileda, Unico, Dopio, Talia, inTalia, Zati, Subli, Logi, Conva, Topo, Pero, Veda

High for profiles:
- A, D

Slim for profiles:
- X, Mico

Covers are inserted from the front (top) of the profile.

Where to buy? Data sheet