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Product Description

Keystone Sign Hero Contractor Prime LED Sign Tubes

Keystone Sign Hero Contractor Prime is an economical LED sign-tube family for internally illuminated sign cabinets. These ballast-bypass line-voltage tubes combine a built-in Keystone driver, selectable 4000K/5000K/6500K color temperature, frosted construction and rotatable R17d end caps to simplify fluorescent sign-cabinet retrofits while maintaining broad, even illumination.

Key Features & Benefits

  • Three selectable color temperatures: 4000K, 5000K and 6500K
  • Ballast-bypass design eliminates the fluorescent ballast
  • Built-in LED driver; no separate external LED power supply is required
  • Rotatable R17d end caps help accommodate existing socket orientation
  • Double- and single-ended wiring capability on the verified Contractor Prime family
  • Frosted tube construction for broad sign-face illumination
  • Sold by the case of 10 in the CrafterNV variants

Verified Technical Specifications

Product family Keystone Sign Hero Contractor Prime
Input voltage 120–277V AC
Color temperature Selectable 4000K / 5000K / 6500K
Wiring Ballast bypass; line-voltage operation
End caps Rotatable R17d
Optical style Double-sided / 360° sign-tube illumination
Available CrafterNV lengths 18, 24, 30, 36, 42, 48, 64, 72 and 84 inches
Packaging Case of 10

Common Applications

  • Fluorescent sign-cabinet LED retrofits
  • New internally illuminated cabinet signs
  • Color-faced and dark-faced sign cabinets
  • Single- and double-face commercial signs

Selection & Installation Guidance

Select the tube length that matches the cabinet and existing lamp spacing, then choose the desired CCT at installation. These tubes are designed to bypass the fluorescent ballast; they are not ballast-compatible Type A lamps. The existing R17d sockets can be retained when suitable, but wiring must follow Keystone's installation instructions and applicable electrical codes. For socket-free new construction or retrofits with damaged sockets, Keystone's separate Sign Hero Direct Wire system may be a better fit.

Frequently Asked Questions

Do Sign Hero Contractor Prime tubes require a ballast?

No. They are ballast-bypass LED sign tubes with an integrated driver.

Can I select the color temperature?

Yes. The verified Contractor Prime models in this listing provide 4000K, 5000K and 6500K selection.

Do I need an external LED power supply?

No. The driver is integrated into the lamp.

Are these sold individually?

The CrafterNV variants in this listing are packaged as cases of 10.

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