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ThinkGrow Model - C Clone LED Bar (2 Pack) - Green Thumb Depot
ThinkGrow Model-C Clone LED Bar (2 Pack)

ThinkGrow Model-C Clone LED Bar (2 Pack)

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SKU: Model-C

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$75.05
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The ThinkGrow Model-C 4ft Clone LED Bar (2-pack) is an 18W full-spectrum propagation solution designed for seedlings, cuttings, and young plants. Each bar delivers over 36 µmol/s at >2 µmol/J efficacy with a gentle, uniform output that prevents seedling burn while supporting strong root and leaf development. With autosensing 100–277V input, IP66 waterproof protection, and a slim, lightweight 4ft bar design, it’s ideal for high-density cloning racks, shelves, and continuous, energy-efficient operation in modern professional or serious indoor hobby gardens.

  • Designed specifically for seedlings, cuttings, and young plants
  • 18W per bar with >36 µmol/s and >2 µmol/J efficacy
  • Gentle full-spectrum (white, red, blue) prevents seedling burn
  • IP66 rated for wet, humid grow environments
  • Autosensing 100–277V input with built-in power supply
  • Slim 4ft bars ideal for cloning racks and tight spaces

Is the ThinkGrow Model-C 4ft Clone LED Bar (2-pack) Right for Me?

The ThinkGrow Model-C 4ft Clone LED Bar (2-pack) is purpose-built for propagation racks, clone domes, and nursery spaces where seedlings, cuttings, and young plants need gentle but effective light. Each 18W bar delivers >36 µmol/s of full-spectrum output with blue, white, and red components to promote rapid rooting and early leaf development without burning tender tissue. With IP66 waterproof protection, an autosensing 100–277V input, and a slim 4ft profile, this kit is perfect for high-density, energy-efficient cloning setups in both hobby and professional environments.

Features & Benefits

Specifications

What is included?

Warranty & Returns

Features

Maximize your Plant Growth

Engineered for propagation racks, the ThinkGrow Model-C 4ft Clone LED Bar delivers gentle, full-spectrum output tailored to seedlings, cuttings, and young plants. Each 18W bar provides >36 µmol/s at >2 µmol/J for efficient rooting and early vegetative growth. IP66 protection, autosensing 100–277V input, and a slim 4ft profile make this 2-pack ideal for continuous, professional, scalable high-density cloning room setups.

Gentle Full-Spectrum for Clones & Seedlings

18W Low-Power, Continuous Operation

>36 µmol/s PPF at >2 µmol/J

IP66 Waterproof & Dust-Tight Housing

Slim 4ft Bar for Racks & Shelves

Autosensing 100–277V Built-In Power Supply

Benefits of LED Grow Lights

LED grow lights offer numerous benefits for plant cultivation. They are energy-efficient, customizable in spectrum, emit minimal heat, and have a long lifespan. These qualities reduce costs, enhance growth, and promote environmentally friendly and low-maintenance cultivation practices.

Instant On/Off

It allows precise control over light cycles.

Full Spectrum Lighting

This promotes healthier and more robust plant growth.

Low Heat Emission

This reduces the risk of heat stress and saves them from damaging

Easy Installation

LED grow lights require less maintenance, saving you time and effort.

Optimized Light Output

Allows you to adjust the light spectrum to suit different plant types and growth stages

Power Saver

LED grow lights save energy, costs, and promote sustainable cultivation.

Durable Design

Constructed with top-quality materials, ensuring prolonged use in various conditions.

Consistent Output

Engineered for sustained performance, guaranteeing optimal light output over time.

wetanddry

Why ThinkGrow?

ThinkGrow is known for engineering professional-grade horticulture lighting built for precision, efficiency, and long-term reliability. Their fixtures use advanced multi-channel spectrum control, plug-and-play designs, and seamless integration with environmental controllers—making them ideal for serious growers. With strong performance, scalable group control, and commercial-ready durability, ThinkGrow provides dependable lighting solutions trusted across indoor farms and high-output grow environments.

wetanddry

Spectrum Matters

The ThinkGrow Model-C 4ft Clone LED Bar delivers a carefully balanced full-spectrum output designed for early plant development. Using a blend of white light enriched with red and blue wavelengths, the Model-C supports fast rooting, compact growth, and healthy leaf formation in propagation and nursery stages. Its gentle intensity helps prevent seedling burn while still providing enough photon density to drive vigorous, uniform growth across clone trays and starter pots.

Propagation-Optimized Full Spectrum

Full-spectrum white enriched with red and blue wavelengths to support strong root initiation and early leaf development in seedlings and cuttings.

Seedling-Safe Light Intensity

Gentle, uniform output designed to minimize stress and avoid burning tender tissue when mounted at the recommended >6" above the canopy.

Efficient Tray Coverage

A slim 4ft bar form factor delivers even coverage across cloning racks and propagation shelves, maximizing usable PPF (>36 µmol/s) while keeping energy use low at just 18W per bar.

Why Thousands of Growers Choose to Work Exclusively with Greenhouse with plants

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FAQ Section

What spectrum does the ThinkGrow Model-C 4ft Clone LED Bar emit?
The ThinkGrow Model-C provides a gentle full-spectrum output using white light with red and blue components, ideal for seedlings, cuttings, and young plants in propagation and early veg stages.
How much power does each Model-C bar consume?
Each ThinkGrow Model-C bar draws 18W of power while delivering over 36 µmol/s of photosynthetic light at an efficacy greater than 2 µmol/J, making it very energy efficient for propagation racks.
Is the ThinkGrow Model-C 4ft Clone LED Bar waterproof?
Yes, the Model-C is IP66 rated, meaning it is highly resistant to dust and water and is suitable for humid grow rooms and propagation environments.
What mounting height is recommended for this clone LED bar?
ThinkGrow recommends mounting the Model-C at more than 6" (15.2 cm) above the canopy to provide gentle, even light intensity ideal for seedlings and clones.
What voltage range does the Model-C 4ft Clone LED Bar support?
The Model-C operates on an autosensing 100–277 VAC input range, allowing it to work with most common electrical setups in home, commercial, or industrial grow spaces.
What is the main use case for the ThinkGrow Model-C?
The Model-C is designed specifically for propagation, cloning, and seedling stages, providing a stable, gentle full-spectrum output that encourages strong root systems and compact early growth.
How long is the expected lifetime of this LED grow light?
The ThinkGrow Model-C has an L90 lifetime rating of over 54,000 hours, meaning it is designed to maintain at least 90% of its original light output for a very long operating period.
How long does shipping take?
Please check our shipping policy here for estimated delivery times.
What is the return policy?
Please review our return policy here for full details.

Specifications

SPECS & DIMENSIONS

Weight 3.75 lbs. (2-bar kit)
Dimension 58.13"L x 1.05"W x 1.40"H (per bar)
LED Light Spectrum Full Spectrum (White with Red & Blue Components)
IP Rating IP66 – Waterproof & Dust-Tight

MATERIALS & POWER

Voltage and Current

  • Autosensing 100–277 VAC input supports a wide range of electrical setups while keeping power draw low at just 18W per bar for continuous propagation lighting.

LED Diodes

  • High-efficiency diodes deliver >36 µmol/s PPF per bar with a propagation-optimized full spectrum for seedlings and clones.

Power Supply

  • Each bar features a built-in power supply, simplifying installation and ensuring stable, reliable output in demanding, high-humidity grow environments.

LED LIGHTS

Application & Design

  • Slim 4ft bar design with transparent PC cover protects the lamp beads while providing even coverage over clone trays, domes, and nursery shelving for dense propagation layouts.
Brand ThinkGrow
SKU N/A
Weight (lb.) 3.75
Length (in.) 58.13
Width (in.) 1.05
Height (in.) 1.40
LED Light Spectrum Full Spectrum (White + Red + Blue)
LED Fixture Type 4ft Bar Light
LED Features Built-in Power Supply, IP66 Rated, Slim Profile, Transparent PC Cover
PPF >36 µmol/s (per bar)
Efficacy >2.0 µmol/J
Input Power 18W (per bar)
Input Voltage Autosensing 100–277 VAC
Mounting Height >6" (15.2 cm) Above Canopy
Working Temperature -4–104°F (-20–40°C)
Working Humidity ≤90% RH
Ingress Protection IP66

What is Included?

What’s in the box.

  • ThinkGrow Model-C 4ft Clone LED Bars (x2)
  • 12' 120V Power Cord (x1)
  • Cable Ties (x4)
  • Steel Mounting Clips (x4)

Warranty Policy

It's recommended to contact Think Grow for specific warranty information related to their LED grow lights. Please note that warranty details may vary depending on the product model, purchase location, and other factors.

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