for greenhouse applications

spectral accuracy, intensity low profile engineering exellence



Header #1Header #2
Dimensions4.2” x 48” x 4.8”
System Power333W
PPF>673 μmol/s
PPFD> 1100 μmol/sec/m (based on a 40’x 60’ room size hanging 6” over the canopy)
Efficacy>2.5 μmol/J (± 5%)
Based on 10-bar 40 ft x 60 ft. room size hanging 6 in. over canopy

The powerful Linea-48XL is engineered to optimize your greenhouse applications

On many different levels. Designed to be a full 48” in length and only 4.5” wide, the size guarantees excellent uniformity while minimizing shadowing and the number of electrical drops involved. At only 330 watts the 120° integral optic delivers an exceptional 767 μmol level.


a1 spectrum for the entire grow cycle

The finely-tuned A-1 ‘Entire Life Cycle Spectrum’ has proven at universities and various grow environments to improve the trichomes and taste while cutting operational costs and shortening grow cycles.





Take a look at how the Linea-48 XL grow light is designed for easy future technology updates.


Our proprietary engineered printed circuit boards together with our extruded aluminum heat sinking are designed to conduct heat away from the plants. This enables you to suspend the Verta within 6” over the plant without fear of giving it too much heat.


As technology improves, or the grower simply wishes to try a different spectrum, the Linea’s modular construction allows growers to change out the circuit board in order to change the spectrum or improve efficacy.

No other grow light is able to deliver as excellent of a uniformity ratio as the Linea ensuring an equal blanket of photons across the canopy.

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.


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

SpecGrade’s proven A-1 spectra for the entire life-cycle of the plant enables the grower to take their plants from veg to flowering without moving them.

Because grow lighting equipment is commonly exposed to water, dust, dirt, humidity and high levels of ambient temperatures on May 4, 2017 Underwriters Laboratory (UL) published UL8800, a set of safety requirements to be used when evaluating lighting equipment including not only the grow light but also non-permanent cords and plugs for horticultural applications. The specifier should look for this UL safety Mark before purchasing this type of equipment.

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.

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