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Inter-Canopy Lighting

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Inter-Canopy Lighting

SpecGrade LED’s bi-directional Extra series, with our M-1 spectrum, is designed to supplement the existing top lighting in an effort to increase yields from 10% to 30%. The leaves of most plants prohibit the PAR from top lighting to reach lower levels on the stalk.  

Our adjustable inter-lighting will surgically add an additional 180 µmols (± 10%) where it is needed most, consistently creating a stronger and more vital plant without adding significant heat. Research indicates that LED light can more efficiently be converted into sugar, creating a healthier plant.

SpecGrade LED - Extra



  • Dimensions: 4.9” X 42.5” X 5.4”
  • System Power: 60W (30W Per Bar)
  • PPF: >136 μmol/s (for both bars)
  • Efficacy: >2.23 μmol/J (± 5%)

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Sometimes Less Is More...

Negligible Heat

Our proprietary engineered printed circuit boards, together with highly engineered extruded aluminum heat sinking, is designed to conduct heat away from the plants. These 30-watt bars, with an integral lens, will provide additional photons while adding negligible heat.

...But Not Always


Our finely-tuned M-1 spectrum will provide the additional PAR required to increase yields while not impacting the plant with heat. This proven balanced red-blue combination spectra is optimal for vegetative and flowering, resulting in some of the industry’s highest yields and fastest ROIs. 



The Extra was designed to deliver additional amounts of PAR without interfering with plant growth. Each bar, measuring only 1” tall and 1” wide is equipped with a highly translucent glass lens.


Each Extra inter-lighting bar has a 60° aimable range to ensure the additional PAR is directed to the area of the plant that is most likely to increase yield.

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Robust Construction & Modularity

The Extra features proprietary extruded aluminum heat sinking and an optic grade tempered glass lens that allows for power washing to maintain desired PPFD levels. This ensures the Extra will stand up to the harsh environment of a grow facility.


Antimicrobial Finish (Optional)

Our antimicrobial paint additive, standard with every SpecGrade grow light is formulated to provide lasting and effective protection against harmful microorganisms such as bacteria, viruses, fungi, algae, mold, and mildew.

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10/7 Warranty

Because we build each grow light to the highest standards, we feel comfortable providing the 10/7 Warranty. Every SpecGrade grow light comes with a 10-year warranty on the LED boards and a 7-year warranty on the drivers. View our warranty details here.


Daisy-Chain Wiring Solution

SpecGrade offers our clients a Daisy-Chain Solution that significantly reduces the
cost of an electrical contractor dropping a wire for each grow light. Or, it can turn
the project into a time-saving do-it-yourself job.