• An infographic product card for a Keystone Color Select Sign Hero 360 LED sign lamp, model KT-LEDXT8-XXP2SF-8CSK-DX2. The card features the Keystone and Sign Hero 360 logos at the top, product specifications, features, and compatibility details in red and black text on a white background.
  • A technical specification and dimension chart for a Keystone Sign Hero 360 double-sided LED sign tube, model KT-LEDXXT8-XXXPSF-8CSK-DX2. The chart includes product branding, physical specifications, a line drawing with labeled dimensions A, B, and C, and feature icons for multiple lengths, tube diameter, end cap width, 360-degree illumination, rotatable end caps, and Color Select support.
  • A long LED tube light with a rotatable glass base, shown on a white background with explanatory graphics. The graphic includes a sun icon with rays, red text reading 'Wide light distribution = No shadowing No hotspots,' a red arrow circling the base, and the text 'ROTATABLE CASE R17D.
  • A close-up of a Keystone SirenHerb 360 LED grow light tube, showing the white and silver cylindrical body, a white end cap with a red ring and switch, and the brand name printed on the side.
  • Two long LED linear light tubes shown diagonally on a plain white background, with white end caps and visible internal LED chips.
An infographic product card for a Keystone Color Select Sign Hero 360 LED sign lamp, model KT-LEDXT8-XXP2SF-8CSK-DX2. The card features the Keystone and Sign Hero 360 logos at the top, product specifications, features, and compatibility details in red and black text on a white background.
A technical specification and dimension chart for a Keystone Sign Hero 360 double-sided LED sign tube, model KT-LEDXXT8-XXXPSF-8CSK-DX2. The chart includes product branding, physical specifications, a line drawing with labeled dimensions A, B, and C, and feature icons for multiple lengths, tube diameter, end cap width, 360-degree illumination, rotatable end caps, and Color Select support.
A long LED tube light with a rotatable glass base, shown on a white background with explanatory graphics. The graphic includes a sun icon with rays, red text reading 'Wide light distribution = No shadowing No hotspots,' a red arrow circling the base, and the text 'ROTATABLE CASE R17D.
A close-up of a Keystone SirenHerb 360 LED grow light tube, showing the white and silver cylindrical body, a white end cap with a red ring and switch, and the brand name printed on the side.
Two long LED linear light tubes shown diagonally on a plain white background, with white end caps and visible internal LED chips.

Keystone Sign Hero Contractor Prime LED Sign Tubes provide an energy-efficient LED replacement for traditional T12HO and T8HO fluorescent lamps used in internally illuminated sign cabinets. Available in sizes from 18" through 84", these Contractor Prime tubes feature Keystone Color Select technology, allowing installers to select 4000K, 5000K, or 6500K at installation.

Designed for both single-sided and double-sided illuminated signs, these LED sign tubes provide 360° light distribution with a frosted polycarbonate lens for smooth, evenly distributed illumination. Rotatable R17d end caps allow the lamp to be positioned for proper light direction regardless of socket orientation.

Sign Hero Contractor Prime tubes feature an integrated LED driver and ballast-bypass design, eliminating the need for the existing fluorescent ballast. They operate directly from 120–277V line voltage and are designed to work with compatible R17d sign sockets.

The flexible design supports single-ended or double-ended wiring, making these lamps an excellent solution for retrofitting existing fluorescent sign cabinets.

Key Features & Benefits

  • Sold by the case – 10 LED sign tubes per case
  • Keystone Sign Hero Contractor Prime Series
  • Replaces traditional T12HO and T8HO fluorescent sign lamps
  • Color Select: 4000K / 5000K / 6500K
  • Universal 120–277V input
  • Integrated LED driver
  • Ballast-bypass operation
  • No external LED driver or fluorescent ballast required
  • Double-sided 360° light distribution
  • Frosted polycarbonate construction
  • Rotatable R17d recessed double-contact end caps
  • Single-ended or double-ended wiring
  • Suitable for single-sided and double-sided illuminated sign cabinets
  • CRI >80
  • Designed for smooth, even sign-face illumination
  • Helps reduce visible hot spots
  • Multiple lengths available for common commercial sign cabinets
  • Professional solution for new installations and fluorescent-to-LED sign conversions

Available Sizes

18" – 7W – Case of 10
Manufacturer Part Number: KT-LED7T8-18P2SF-8CSK-DX2

24" – 9W – Case of 10
Manufacturer Part Number: KT-LED9T8-24P2SF-8CSK-DX2

30" – 11W – Case of 10
Manufacturer Part Number: KT-LED11T8-30P2SF-8CSK-DX2

36" – 12W – Case of 10
Manufacturer Part Number: KT-LED12T8-36P2SF-8CSK-DX2

42" – 15W – Case of 10
Manufacturer Part Number: KT-LED15T8-42P2SF-8CSK-DX2

48" – 18W – Case of 10
Manufacturer Part Number: KT-LED18T8-48P2SF-8CSK-DX2

64" – 26W – Case of 10
Manufacturer Part Number: KT-LED26T8-64P2SF-8CSK-DX2

72" – 30W – Case of 10
Manufacturer Part Number: KT-LED30T8-72P2SF-8CSK-DX2

84" – 32W – Case of 10
Manufacturer Part Number: KT-LED32T8-84P2SF-8CSK-DX2

Installation

These are ballast-bypass LED sign tubes. The existing fluorescent ballast must be bypassed or removed from the circuit and the lamps wired according to the manufacturer's installation instructions.

Electrical installation should be performed in accordance with applicable electrical codes and manufacturer instructions.
🚚 $9.95 Flat Rate • FREE Ground Shipping $300+ Excludes freight

Keystone Technologies

Keystone Sign Hero Contractor Prime LED Sign Tubes – 4000K/5000K/6500K – Case of 10

SKU KT-LED7T8-18P2SF-8CSK-DX2
$249.50

Keystone Sign Hero Contractor Prime LED Sign Tubes provide an energy-efficient LED replacement for traditional T12HO and T8HO fluorescent lamps used in internally illuminated sign cabinets. Available in sizes from 18" through 84", these Contractor Prime tubes feature Keystone Color Select technology, allowing installers to select 4000K, 5000K, or 6500K at installation.

Designed for both single-sided and double-sided illuminated signs, these LED sign tubes provide 360° light distribution with a frosted polycarbonate lens for smooth, evenly distributed illumination. Rotatable R17d end caps allow the lamp to be positioned for proper light direction regardless of socket orientation.

Sign Hero Contractor Prime tubes feature an integrated LED driver and ballast-bypass design, eliminating the need for the existing fluorescent ballast. They operate directly from 120–277V line voltage and are designed to work with compatible R17d sign sockets.

The flexible design supports single-ended or double-ended wiring, making these lamps an excellent solution for retrofitting existing fluorescent sign cabinets.

Key Features & Benefits

  • Sold by the case – 10 LED sign tubes per case
  • Keystone Sign Hero Contractor Prime Series
  • Replaces traditional T12HO and T8HO fluorescent sign lamps
  • Color Select: 4000K / 5000K / 6500K
  • Universal 120–277V input
  • Integrated LED driver
  • Ballast-bypass operation
  • No external LED driver or fluorescent ballast required
  • Double-sided 360° light distribution
  • Frosted polycarbonate construction
  • Rotatable R17d recessed double-contact end caps
  • Single-ended or double-ended wiring
  • Suitable for single-sided and double-sided illuminated sign cabinets
  • CRI >80
  • Designed for smooth, even sign-face illumination
  • Helps reduce visible hot spots
  • Multiple lengths available for common commercial sign cabinets
  • Professional solution for new installations and fluorescent-to-LED sign conversions

Available Sizes

18" – 7W – Case of 10
Manufacturer Part Number: KT-LED7T8-18P2SF-8CSK-DX2

24" – 9W – Case of 10
Manufacturer Part Number: KT-LED9T8-24P2SF-8CSK-DX2

30" – 11W – Case of 10
Manufacturer Part Number: KT-LED11T8-30P2SF-8CSK-DX2

36" – 12W – Case of 10
Manufacturer Part Number: KT-LED12T8-36P2SF-8CSK-DX2

42" – 15W – Case of 10
Manufacturer Part Number: KT-LED15T8-42P2SF-8CSK-DX2

48" – 18W – Case of 10
Manufacturer Part Number: KT-LED18T8-48P2SF-8CSK-DX2

64" – 26W – Case of 10
Manufacturer Part Number: KT-LED26T8-64P2SF-8CSK-DX2

72" – 30W – Case of 10
Manufacturer Part Number: KT-LED30T8-72P2SF-8CSK-DX2

84" – 32W – Case of 10
Manufacturer Part Number: KT-LED32T8-84P2SF-8CSK-DX2

Installation

These are ballast-bypass LED sign tubes. The existing fluorescent ballast must be bypassed or removed from the circuit and the lamps wired according to the manufacturer's installation instructions.

Electrical installation should be performed in accordance with applicable electrical codes and manufacturer instructions.
$249.50
Size:
An infographic product card for a Keystone Color Select Sign Hero 360 LED sign lamp, model KT-LEDXT8-XXP2SF-8CSK-DX2. The card features the Keystone and Sign Hero 360 logos at the top, product specifications, features, and compatibility details in red and black text on a white background. A technical specification and dimension chart for a Keystone Sign Hero 360 double-sided LED sign tube, model KT-LEDXXT8-XXXPSF-8CSK-DX2. The chart includes product branding, physical specifications, a line drawing with labeled dimensions A, B, and C, and feature icons for multiple lengths, tube diameter, end cap width, 360-degree illumination, rotatable end caps, and Color Select support. A long LED tube light with a rotatable glass base, shown on a white background with explanatory graphics. The graphic includes a sun icon with rays, red text reading 'Wide light distribution = No shadowing No hotspots,' a red arrow circling the base, and the text 'ROTATABLE CASE R17D. A close-up of a Keystone SirenHerb 360 LED grow light tube, showing the white and silver cylindrical body, a white end cap with a red ring and switch, and the brand name printed on the side. Two long LED linear light tubes shown diagonally on a plain white background, with white end caps and visible internal LED chips.
An infographic product card for a Keystone Color Select Sign Hero 360 LED sign lamp, model KT-LEDXT8-XXP2SF-8CSK-DX2. The card features the Keystone and Sign Hero 360 logos at the top, product specifications, features, and compatibility details in red and black text on a white background. A technical specification and dimension chart for a Keystone Sign Hero 360 double-sided LED sign tube, model KT-LEDXXT8-XXXPSF-8CSK-DX2. The chart includes product branding, physical specifications, a line drawing with labeled dimensions A, B, and C, and feature icons for multiple lengths, tube diameter, end cap width, 360-degree illumination, rotatable end caps, and Color Select support. A long LED tube light with a rotatable glass base, shown on a white background with explanatory graphics. The graphic includes a sun icon with rays, red text reading 'Wide light distribution = No shadowing No hotspots,' a red arrow circling the base, and the text 'ROTATABLE CASE R17D. A close-up of a Keystone SirenHerb 360 LED grow light tube, showing the white and silver cylindrical body, a white end cap with a red ring and switch, and the brand name printed on the side. Two long LED linear light tubes shown diagonally on a plain white background, with white end caps and visible internal LED chips.

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Frequently Bought Together

Total price$323.90

Product Description

Keystone Sign Hero Contractor Prime LED Sign Tubes provide an energy-efficient LED replacement for traditional T12HO and T8HO fluorescent lamps used in internally illuminated sign cabinets. Available in sizes from 18" through 84", these Contractor Prime tubes feature Keystone Color Select technology, allowing installers to select 4000K, 5000K, or 6500K at installation.

Designed for both single-sided and double-sided illuminated signs, these LED sign tubes provide 360° light distribution with a frosted polycarbonate lens for smooth, evenly distributed illumination. Rotatable R17d end caps allow the lamp to be positioned for proper light direction regardless of socket orientation.

Sign Hero Contractor Prime tubes feature an integrated LED driver and ballast-bypass design, eliminating the need for the existing fluorescent ballast. They operate directly from 120–277V line voltage and are designed to work with compatible R17d sign sockets.

The flexible design supports single-ended or double-ended wiring, making these lamps an excellent solution for retrofitting existing fluorescent sign cabinets.

Key Features & Benefits

  • Sold by the case – 10 LED sign tubes per case
  • Keystone Sign Hero Contractor Prime Series
  • Replaces traditional T12HO and T8HO fluorescent sign lamps
  • Color Select: 4000K / 5000K / 6500K
  • Universal 120–277V input
  • Integrated LED driver
  • Ballast-bypass operation
  • No external LED driver or fluorescent ballast required
  • Double-sided 360° light distribution
  • Frosted polycarbonate construction
  • Rotatable R17d recessed double-contact end caps
  • Single-ended or double-ended wiring
  • Suitable for single-sided and double-sided illuminated sign cabinets
  • CRI >80
  • Designed for smooth, even sign-face illumination
  • Helps reduce visible hot spots
  • Multiple lengths available for common commercial sign cabinets
  • Professional solution for new installations and fluorescent-to-LED sign conversions

Available Sizes

18" – 7W – Case of 10
Manufacturer Part Number: KT-LED7T8-18P2SF-8CSK-DX2

24" – 9W – Case of 10
Manufacturer Part Number: KT-LED9T8-24P2SF-8CSK-DX2

30" – 11W – Case of 10
Manufacturer Part Number: KT-LED11T8-30P2SF-8CSK-DX2

36" – 12W – Case of 10
Manufacturer Part Number: KT-LED12T8-36P2SF-8CSK-DX2

42" – 15W – Case of 10
Manufacturer Part Number: KT-LED15T8-42P2SF-8CSK-DX2

48" – 18W – Case of 10
Manufacturer Part Number: KT-LED18T8-48P2SF-8CSK-DX2

64" – 26W – Case of 10
Manufacturer Part Number: KT-LED26T8-64P2SF-8CSK-DX2

72" – 30W – Case of 10
Manufacturer Part Number: KT-LED30T8-72P2SF-8CSK-DX2

84" – 32W – Case of 10
Manufacturer Part Number: KT-LED32T8-84P2SF-8CSK-DX2

Installation

These are ballast-bypass LED sign tubes. The existing fluorescent ballast must be bypassed or removed from the circuit and the lamps wired according to the manufacturer's installation instructions.

Electrical installation should be performed in accordance with applicable electrical codes and manufacturer instructions.

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