LedsC4 Mix Frame 81mm TC-1900-BLA Structure for indoor use. For downlighting. Structure material: Aluminium. Structure finish: White. Warranty: 5 Years. Product net weight (Kg): 0.04 Product width or diameter (mm): 81 Product height (mm): 35 of the hole for recessing (mm): 70 Permitted ceiling thickness: 0-2.