Product description:
- anodized aluminum profile with opal cover (sold separately)
- available length 6m
- profile end with plastic end cap (accessories sold separately)
- dimensions: 40x12mm

LT24DWB4012^6 - ALU PROFIL DWB40 anod.
LT24DWB4012O^6 - OPAL COVER FOR DWB40
LWT01ZASDWB4020PCO - PLASTIC FULL END CAP

As a rule, both aluminum profiles and plastic diffusers have a positive length tolerance and can, therefore, deviate from each other by some millimeters.
Please consider linear extension with temperature variations.