FieldShield Direct Bury 14/10 mm Microduct is a durable, crush resistant fiber duct product designed to increase the protection of fiber while decreasing installation and maintenance expenses. Manufactured using high density polyethylene (HDPE), FieldShield Direct Bury 14/10 mm Microduct offers superior durability and protection.

Technical Specifications

Length Non-toneable: 1,500 feet (457.20 m) per spool; Toneable: 1,250 feet (381.00 m) per spool; Black Microduct: 4,922 feet (1500.23 m) per spool
Outside Diameter Non-toneable: 0.551” (14.00 mm); Toneable: 0.66” (16.76 mm)
Inside Diameter 0.390" (9.91 mm)
Wall Thickness 0.079" (2.01 mm)
Slip Layer Minimum 0.004" (0.102 mm)
Ovality ≤ 5%
Installation Tension Non-toneable: 264 lbf; Toneable: 346 lbf
Bend-Radius Non-toneable: 8” (203.20 mm) radius minimum; Toneable: 10”  (254.00 mm) radius minimum
Material High Density Polyethylene (HDPE)
Operating Temperature -40°F to 176°F (-40°C to 80°C)
Installation Temperature -14°F to 158°F (-26°C to 70°C)
Color Orange or Black
Tone Wire Insulated Stranded Copper
Tone Wire Diameter 0.032” (0.813 mm) / 20 AWG
Markings Part number, lot number, footage markers every two feet
Spool Size 12” ID x 24” OD x 20” W (304.80 mm x 609.60 mm x 508.00 mm); Black: 40" OD x 24" W40” OD x 24” W (1016.00 mm x 609.60 mm)
Weight Non-toneable: 72 lbs (32.66 kg); Toneable: 95 lbs(43.09 kg); Black: 375 lbs. (170.10 kg)

Features & Benefits


  • Compliant to Telcordia GR-3155


  • Quick and easy to install
  • Direct Bury Microduct has high tensile strength and crush resistance that withstands all types of ground implementations including open trenching, vibratory plowing, micro-trenching and directional boring
  • Made from HDPE to prevent degradation


  • Optional external tone wire simplifies ground locating
  • Industry standard orange provides high visibility for direct bury applications
  • Standard nylon pull string simplifies deployment of fiber
  • Smooth core slip lining reduces drag co-efficient enabling fiber to be pushed or pulled with minimal resistance


  • Maximizes capacity of existing conduit previously considered exhausted
  • Provides industry leading protection for “last mile” feeds