13 hole strain relief grip with 1 1/4" hub  All holes seal if not used by skinned-over gland 

Heyco® Solar Masthead™ II Cordgrips	Specifications
Part No. Black Description Gland Configurations Part Dimensions CAD A Clearance Hole B Max O.A. Length C Thread Size D Wrenching Nut Thk. E Wrenching Flats in. mm. in. mm. in. mm. in. mm. in. mm. M8437GBK-SM SMCG 1 9 - 5,5 mm holes 1.33 33,7 2.41 61,2 .76 19,3 .30 7,6 1.73 43,9 M4524GBM-SM SMCG 1-1/4 13 - 5,5 mm holes 1.68 42,7 2.69 68,3 .78 19,8 .30 7,6 2.05 52,1

Accommodates USE-2 12 AWG and 10 AWG wire
Skinned-over gland remains liquid tight, independent of the number of wires used

• Skinned-over glands in the Solar Masthead II Cordgrips offer
  flexibility to use from 1 to 13 of the available holes while still providing a
  liquid tight seal around the wire.
• Designed for solar rooftop installations.
• Provides a watertight seal for PV module output leads to inverters.
• Secures input PV leads from solar panel array strings to fuse holder
  hookup within solar combiner boxes.
• Eliminates the need for combiner box in residential rooftop solar applications
  when appropriate threaded adaptor is used.
• Generous wrenching flats for ease of assembly.
• No disassembly required for installation.
• UV resistant nylon construction with TPE or Buna N Sealing Gland resists salt
  water, weak acids, gasoline, alcohol, oil, grease, and common solvents.
• Contact Heyco for other sizes and gland configurations.
• Patent Pending