In Stock This item is available and ready to ship within the time frame listed on the product page.
Back Order This item is currently unavailable or out of stock. Your order will ship as soon as the item becomes available.
Pre Order This item is currently unavailable or out of stock, but new inventory is due by the EDA (estimated date of arrival) and your order will be shipped from the next incoming inventory.
Built to Order Production will begin on this item upon purchase and will ship when the product is complete.
Guaranteed Lowest Price!
The PROGROW 640 is a full-cycle top lighting solution for commercial or home indoor gardens or grow operations. The 640's form factor allows for scalability and multiple grow room and grow tent configurations where photosynthesis and yield maximization is the aim. The PROGROW 640 delivers high PPFD levels for use with or without CO2 supplementation. Top-shelf light output (PPF), spectral distribution, and efficacy will delivery amazing results with modest impact on your wallet.
Veg Footprint: 5' x 5'
Flower Footprint: 4' x 4'
Watts: 651W
Spectrum: FULL
Grow Light Science PROGROW 640 Watt LED Grow Light
The PROGROW 640 is a full-cycle top lighting solution for commercial or home indoor gardens or grow operations. The 640's form factor allows for scalability and multiple grow room and grow tent configurations where photosynthesis and yield maximization is the aim. The PROGROW 640 delivers high PPFD levels for use with or without CO2 supplementation. Top-shelf light output (PPF), spectral distribution, and efficacy will delivery amazing results with modest impact on your wallet.
Key Features
GLS HI-RED spectrum
Top Bin LEDs
Built in dimming control knob
Dual RJ12 Ports For External Control
High CRI - 93
5 Year Warranty
PROGROW 640 Light Intensity
Crop yields are a function of light intensity. Recent studies show that PPFD levels up to 1500 umols/m2/s will generate a proportional increase in yields as long as other critical inputs are kept in balance. These include CO2, water and nutrients. The PROGROW 640 will deliver PPFD levels in excess of 1000 umol/m2/s whether it is arranged individually or in a multi-unit array. We recommend that all growers study and experiment within their grow space to come up with the best combination of inputs.
Recommended Hanging Heights and PPFD Levels
Seedling - 36" to 48" hanging height, 200 to 300 umols/m2/s
Vegetative - 24 " to 36" hanging height, 300 to 600 umols/m2/s
Flower - 12" to 36" hanging height, 600 to 1,500 umols/m2/s (Note: CO2 supplementation is necessary for higher PPFD levels)
In order to adjust and acheive target PPFD levels from phase to phase throughout the cultivation cycle, it is recommended that growers use a PAR meter in combination with hang height and dimming. The PAR maps and tent configurations shown below are meant to provide general guidance.
Coverage
Vegetative footprint: 5' x 5'
Flowering footprint:4' x 4'
PAR Maps
4’ x 4’ Reflective Walled Area Mounting Height = 24” Average PPFD = 1,109 umol/m2/s 100% Power
5' x 5' Reflective Wall Area Mounting Height = 24” Average PPFD = 748 umol/m2/s 100% Power
Grow Light Science PROGROW 640 Specifications
Veg Footprint
5' x 5'
Flower Footprint
4' x 4'
Power
651 watts
Spectrum
Full
Light Output
1756 umol/s
Dimensions
47.2" X 42.8" X 3.2"
Manufacturer's Warranty
5 Years
Warranty Policy
Subject to the exclusions set forth on the Grow Light Science website www.growlightscience.com, Grow Light Science LLC. (“Grow”) warrants its light emitting diode (LED) luminaires, including the LED arrays and the LED drivers and integral control devices (“LED Luminaire(s)”) for all Grow products, to be free from defect in material and workmanship (the “Limited Warranty”) for a period of five (5) years from the date of shipment from Grow facilities. Grow warrants its dimmers and other LED Luminaire controlling products (“LED Controllers”) to be free from defect in material and workmanship for a period of one (1) year from the date of shipment from Grow facilities. The LED arrays in the LED Luminaire(s) will be considered defective in material or workmanship only if a total of 15% or more of the individual light emitting diodes in the LED Luminaire(s) fail to illuminate or any standard finish or coating on a product shows cracking, peeling, excessive fading or corrosion defects during applicable warranty period.
Return & Exchange Policy
If at any time during the first 120 days following delivery of GROW 200 or GROW 300 product you are dissatisfied, you may elect to return the product for a full refund (excluding shipping). A maximum of two (2) fixtures may be returned. Product must be in "like new condition" (no dirt, marks, scratches, or damage of any kind). Product must be returned with all original packaging and contents. An RMA (return merchandise authorization) must be requested of and issued by Grow Light Science prior to return. For RMA during 120 day satisfaction guarantee, please send an email request to: support@growlightscience.com.
For warranty replacements, please send an email to support@growlightscience.com for complete instructions. If approved, our team will issue an RMA (Return Merchandise Authorization) and replacement product will be sent out upon receipt of the defective units. Grow Light Science will either replace or repair the defective unit based upon our discretion. Items returned without an RMA number will be rejected and returned to sender. In situations where replacements are needed prior to the return of defective product, please call us direct at (419)343-3294 to submit a request. Customers requesting an advance replacement will be required to provide payment information for a replacement unit which Grow Light Science will keep as a pending charge for the original cost of the item. Once we receive the defective item, the unit will be examined for accessories and physical damage. If after review all accessories are present and the unit is in “good” condition, then the pending charge will be voided. If Grow Light Science does not receive the defective unit back within 25 days from the shipment of the replacement, we will formally charge your credit card and the replacement unit will be yours to keep. Exemptions apply.
Free Shipping
We are proud to offer FREE SHIPPING on MOST orders of $100 or more ($200 or more for AC Infinity) with a physical address (no P.O. Boxes) within the contiguous United States. Please note some exceptions do apply.
That means everywhere in the United States besides Alaska, Hawaii, and Puerto Rico. If you live in one of these locations, please contact us for a shipping quote.
Please note: We process all website orders Monday - Friday, 7 am - 4 pm. If you placed an order over the weekend or after hours, it will not get processed until the next business day.
Price Match Guarantee
We work very hard to ensure that we offer the absolute lowest prices online.
That means that if you find any authorized online retailer that has a lower price than us, just let us know and we'll match their price!
Please note some restrictions apply and this does NOT apply to any auction, discounter, or market platform including eBay, Amazon, Alibaba, AliExpress, etc.
For additional details please see our full Price Guarantee Policy here.
Description
Veg Footprint: 5' x 5'
Flower Footprint: 4' x 4'
Watts: 651W
Spectrum: FULL
Grow Light Science PROGROW 640 Watt LED Grow Light
The PROGROW 640 is a full-cycle top lighting solution for commercial or home indoor gardens or grow operations. The 640's form factor allows for scalability and multiple grow room and grow tent configurations where photosynthesis and yield maximization is the aim. The PROGROW 640 delivers high PPFD levels for use with or without CO2 supplementation. Top-shelf light output (PPF), spectral distribution, and efficacy will delivery amazing results with modest impact on your wallet.
Key Features
GLS HI-RED spectrum
Top Bin LEDs
Built in dimming control knob
Dual RJ12 Ports For External Control
High CRI - 93
5 Year Warranty
PROGROW 640 Light Intensity
Crop yields are a function of light intensity. Recent studies show that PPFD levels up to 1500 umols/m2/s will generate a proportional increase in yields as long as other critical inputs are kept in balance. These include CO2, water and nutrients. The PROGROW 640 will deliver PPFD levels in excess of 1000 umol/m2/s whether it is arranged individually or in a multi-unit array. We recommend that all growers study and experiment within their grow space to come up with the best combination of inputs.
Recommended Hanging Heights and PPFD Levels
Seedling - 36" to 48" hanging height, 200 to 300 umols/m2/s
Vegetative - 24 " to 36" hanging height, 300 to 600 umols/m2/s
Flower - 12" to 36" hanging height, 600 to 1,500 umols/m2/s (Note: CO2 supplementation is necessary for higher PPFD levels)
In order to adjust and acheive target PPFD levels from phase to phase throughout the cultivation cycle, it is recommended that growers use a PAR meter in combination with hang height and dimming. The PAR maps and tent configurations shown below are meant to provide general guidance.
Coverage
Vegetative footprint: 5' x 5'
Flowering footprint:4' x 4'
PAR Maps
4’ x 4’ Reflective Walled Area Mounting Height = 24” Average PPFD = 1,109 umol/m2/s 100% Power
5' x 5' Reflective Wall Area Mounting Height = 24” Average PPFD = 748 umol/m2/s 100% Power
Grow Light Science PROGROW 640 Specifications
Veg Footprint
5' x 5'
Flower Footprint
4' x 4'
Power
651 watts
Spectrum
Full
Light Output
1756 umol/s
Dimensions
47.2" X 42.8" X 3.2"
Manufacturer's Warranty
5 Years
Warranty & Return Policy
Warranty Policy
Subject to the exclusions set forth on the Grow Light Science website www.growlightscience.com, Grow Light Science LLC. (“Grow”) warrants its light emitting diode (LED) luminaires, including the LED arrays and the LED drivers and integral control devices (“LED Luminaire(s)”) for all Grow products, to be free from defect in material and workmanship (the “Limited Warranty”) for a period of five (5) years from the date of shipment from Grow facilities. Grow warrants its dimmers and other LED Luminaire controlling products (“LED Controllers”) to be free from defect in material and workmanship for a period of one (1) year from the date of shipment from Grow facilities. The LED arrays in the LED Luminaire(s) will be considered defective in material or workmanship only if a total of 15% or more of the individual light emitting diodes in the LED Luminaire(s) fail to illuminate or any standard finish or coating on a product shows cracking, peeling, excessive fading or corrosion defects during applicable warranty period.
Return & Exchange Policy
If at any time during the first 120 days following delivery of GROW 200 or GROW 300 product you are dissatisfied, you may elect to return the product for a full refund (excluding shipping). A maximum of two (2) fixtures may be returned. Product must be in "like new condition" (no dirt, marks, scratches, or damage of any kind). Product must be returned with all original packaging and contents. An RMA (return merchandise authorization) must be requested of and issued by Grow Light Science prior to return. For RMA during 120 day satisfaction guarantee, please send an email request to: support@growlightscience.com.
For warranty replacements, please send an email to support@growlightscience.com for complete instructions. If approved, our team will issue an RMA (Return Merchandise Authorization) and replacement product will be sent out upon receipt of the defective units. Grow Light Science will either replace or repair the defective unit based upon our discretion. Items returned without an RMA number will be rejected and returned to sender. In situations where replacements are needed prior to the return of defective product, please call us direct at (419)343-3294 to submit a request. Customers requesting an advance replacement will be required to provide payment information for a replacement unit which Grow Light Science will keep as a pending charge for the original cost of the item. Once we receive the defective item, the unit will be examined for accessories and physical damage. If after review all accessories are present and the unit is in “good” condition, then the pending charge will be voided. If Grow Light Science does not receive the defective unit back within 25 days from the shipment of the replacement, we will formally charge your credit card and the replacement unit will be yours to keep. Exemptions apply.
Free Shipping
Free Shipping
We are proud to offer FREE SHIPPING on MOST orders of $100 or more ($200 or more for AC Infinity) with a physical address (no P.O. Boxes) within the contiguous United States. Please note some exceptions do apply.
That means everywhere in the United States besides Alaska, Hawaii, and Puerto Rico. If you live in one of these locations, please contact us for a shipping quote.
Please note: We process all website orders Monday - Friday, 7 am - 4 pm. If you placed an order over the weekend or after hours, it will not get processed until the next business day.
Price Match Guarantee
Price Match Guarantee
We work very hard to ensure that we offer the absolute lowest prices online.
That means that if you find any authorized online retailer that has a lower price than us, just let us know and we'll match their price!
Please note some restrictions apply and this does NOT apply to any auction, discounter, or market platform including eBay, Amazon, Alibaba, AliExpress, etc.
For additional details please see our full Price Guarantee Policy here.
Guaranteed Lowest Price!
