Dura-Line plenum-rated MicroDuct (12.7 mm OD / 10 mm ID) designed as an empty microduct pathway for fiber installations. Product family is co-extruded with SILICOREULF low-friction lining, includes internal ribs and footage/meter markings, and is offered in multiple colors. Distributor listings identify a plenum-rated 12.7/10 mm microduct (Dura-Line part 10005886) packaged on a 1000' reel with a pre-installed 50 lb pull string; ETL listed to UL 2024 and CSA C22.2 No.262-04 and produced to GR-3155-CORE standards. Data compiled from distributor product pages and referenced manufacturer technical datasheets (manufacturer site pages/PDFs were listed but blocked from direct rendering).