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Welcome to Sky High Supply, your trusted source for commercial-grade telecom and electrical supplies. Whether you're managing a large-scale infrastructure build or tackling an urgent job site repair, we’ve got the inventory and speed Northeast contractors rely on.

Based in New Jersey and serving New York, Pennsylvania, Connecticut, and beyond, we carry top-tier products from the brands you trust—JMA, Southwire, ConcealFab, and more.

Browse our best-selling categories:

  •  Fiber Jumpers & PIM Solutions

  • THHN & Copper Wire

  • Conduit, Unistrut, and Mounting Hardware

  • Lugs, Barrel Cushions, Tapes, and Accessories

  • Safety Labels & Reflective Markers

Need help finding a product? Our knowledgeable team is here to support electrical contractors, telecom techs, and infrastructure pros every step of the way.

  • #12 Green Stranded THHN Wire (Per Foot)
    #12 Green Stranded THHN Wire (Per Foot)
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    #12 Green Stranded THHN Wire (Per Foot)

    $0.50
    $0.50
  • #10 Red Stranded THHN Wire (Per Foot) by Sky High Supply Company
    #10 Red Stranded THHN Wire (Per Foot)
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     Add To Cart
    #10 Red Stranded THHN Wire (Per Foot)

    $0.75
    $0.75
  • #10 Black Stranded THHN Wire (Per Foot) by Sky High Supply Company
    #10 Black Stranded THHN Wire (Per Foot)
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     Add To Cart
    #10 Black Stranded THHN Wire (Per Foot)

    $0.75
    $0.75
  • #8 Green Stranded THHN Wire (Per Foot)
    #8 Green Stranded THHN Wire (Per Foot)
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     Add To Cart
    #8 Green Stranded THHN Wire (Per Foot)

    $1.85
    $1.85
  • #6 Red Stranded THHN Wire (Per Foot)
    #6 Red Stranded THHN Wire (Per Foot)
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     Add To Cart
    #6 Red Stranded THHN Wire (Per Foot)

    $2.00
    $2.00
  • #6 Black Stranded THHN Wire (Per Foot)
    #6 Black Stranded THHN Wire (Per Foot)
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     Add To Cart
    #6 Black Stranded THHN Wire (Per Foot)

    $2.00
    $2.00
  • #6 Green Stranded THHN Wire (Per Foot)
    #6 Green Stranded THHN Wire (Per Foot)
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     Add To Cart
    #6 Green Stranded THHN Wire (Per Foot)

    $2.00
    $2.00
  • #6 Red Stranded THHN Wire (500' Spool)
    #6 Red Stranded THHN Wire (500' Spool)
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    #6 Red Stranded THHN Wire (500' Spool)

    $1,000.00
    $1,000.00
  • #6 Black Stranded THHN Wire (500' Spool)
    #6 Black Stranded THHN Wire (500' Spool)
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     Add To Cart
    #6 Black Stranded THHN Wire (500' Spool)

    $1,000.00
    $1,000.00
  • #6 Green Stranded THHN Wire (500' Spool)
    #6 Green Stranded THHN Wire (500' Spool)
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     Add To Cart
    #6 Green Stranded THHN Wire (500' Spool)

    $1,000.00
    $1,000.00
  • #2 Green Stranded THHN Wire (Per Foot)
    #2 Green Stranded THHN Wire (Per Foot)
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    Sold out
    #2 Green Stranded THHN Wire (Per Foot)

    $4.25
    $4.25
  • 1/0 Black THHN Wire (Sold Per Foot)
    1/0 Black THHN Wire (Sold Per Foot)
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    Sold out
    1/0 Black THHN Wire (Sold Per Foot)

    $4.75
    $4.75
  • Buy #6 Gray TelcoFlex L4 by the foot #6 Gray TelcoFlex L4 (Per Foot)
    #6 Gray TelcoFlex L4 (Per Foot)
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    Telcoflex L4
    #6 Gray TelcoFlex L4 (Per Foot)

    $2.65
    $2.65
  • TelcoFlex® L4: #2 Gray, Stranded Copper, 200' Spool (UL-Listed)
    TelcoFlex® L4: #2 Gray, Stranded Copper, 200' Spool (UL-Listed)
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    TelcoFlex® L4: #2 Gray, Stranded Copper, 200' Spool (UL-Listed)

    $1,065.00
    $1,065.00
  • 4 Ft Clear Heat Shrink 1/4" 2:1 Ratio
    4 Ft Clear Heat Shrink 1/4" 2:1 Ratio
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    4 Ft Clear Heat Shrink 1/4" 2:1 Ratio

    $4.00
    $4.00
  • 4 Ft Clear Heat Shrink 3/8" 2:1 Ratio
    4 Ft Clear Heat Shrink 3/8" 2:1 Ratio
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    4 Ft Clear Heat Shrink 3/8" 2:1 Ratio

    $4.00
    $4.00
  • 4 Ft Clear Heat Shrink 1/2" 2:1 Ratio
    4 Ft Clear Heat Shrink 1/2" 2:1 Ratio
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    4 Ft Clear Heat Shrink 1/2" 2:1 Ratio

    $4.00
    $4.00
  • 4 Ft Black Heat Shrink – 3/8" (3:1 Ratio, Adhesive-Lined)
    4 Ft Black Heat Shrink – 3/8" (3:1 Ratio, Adhesive-Lined)
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    4 Ft Black Heat Shrink – 3/8" (3:1 Ratio, Adhesive-Lined)

    $4.00
    $4.00
  • 4 Ft Black Heat Shrink 1" 3:1 Ratio by Sky High Supply Company
    4 Ft Black Heat Shrink 1/2' 3:1 Ratio
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    4 Ft Black Heat Shrink 1/2' 3:1 Ratio

    $4.00
    $4.00
  • 4 Ft Black Heat Shrink 1" 3:1 Ratio by Sky High Supply Company
    4 Ft Black Heat Shrink 1" 3:1 Ratio
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    4 Ft Black Heat Shrink 1" 3:1 Ratio

    $9.00
    $9.00
  • Universal Barrel Cushion 1-1/4" (Pack of 10) Universal Barrel Cushion 1-1/4" (Pack of 10)
    Universal Barrel Cushion 1-1/4" (Pack of 10)
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    Universal Barrel Cushion 1-1/4" (Pack of 10)

    $26.00
    $26.00
  • Seven Hole Barrel Cushion 1-5/8" (Bag of 10) Seven Hole Barrel Cushion 1-5/8" (Bag of 10)
    Seven Hole Barrel Cushion 1-5/8" (Bag of 10)
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    Seven Hole Barrel Cushion 1-5/8" (Bag of 10)

    $39.00
    $39.00
  • Four Hole Barrel Cushion 1-5/8" (Bag of 10) Four Hole Barrel Cushion 1-5/8" (Bag of 10)
    Four Hole Barrel Cushion 1-5/8" (Bag of 10)
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    Four Hole Barrel Cushion 1-5/8" (Bag of 10)

    $39.00
    $39.00
  • PSCC-2001 Orange PIM Shield Cushion 10.6-12.5mm
    PSCC-2001 Orange PIM Shield Cushion 10.6-12.5mm
    Quick buy
     Add To Cart
    PSCC-2001 Orange PIM Shield Cushion 10.6-12.5mm

    $18.00
    $18.00
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