Product description:
- anodized aluminum profile with a frosted or opal cover (sold separately)
- 1m, 2m, 3m, 4m and 6m lengths
- profile assembly with simple steel handles (accessories sold separately)
- ending the profile with a simple plastic or aluminum plug (accessories sold separately)
- dimension: 13x18,4mm 

LT21-BD13^*            ALU PROFIL BD13 anod.

LT21-BD-OC^*         OPAL COVER FOR CD, BD

LT21-BD-FC^*          FROSTED COVER FOR CD, BD

LT21-ECP-13            2x PLASTIC END CAPS + SCREWS

LT21-ECA-13            2x ALU END CAPS + SCREWS

LT21-MB-BDCD        2x METAL MOUNTING BRACKET + SCREWS

LT21-MB-HRF           2x METAL MOUNTING BRACKET HRF + SCREWS

Please replace the * in the item number with the required length.
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.