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Description
4 bulb grow light 40.1 PPF 27-Watt Adjustable 4-Panel LED Grow Light Bulb, E26Product Details 40. 1 PPF activates the photosynthesis process necessary for healthy plant growth Adjustable 4 panel design for light in any direction Low heat output keeps plants cooler and retains moisture Full spectrum color for boosting plant growth in all stages: seeding, budding and flowering Shatter resistant polycarbonate lens Integrated LED that never needs to be replaced E26 medium base fits standard lighting fixture ETL rated for indoor use
Product Details
- 40.1 PPF - activates the photosynthesis process necessary for healthy plant growth
- Adjustable 4-panel design for light in any direction
- Low heat output keeps plants cooler and retains moisture
- Full spectrum color for boosting plant growth in all stages: seeding, budding and flowering
- Shatter-resistant polycarbonate lens
- Integrated LED that never needs to be replaced
- E26 medium base fits standard lighting fixture
- ETL rated for indoor use
Specs
- PPF: 40.1
- Lumen: 900
- Energy used: 30 watts
- Red spectrum (nm): 640 nm
- Blue spectrum (nm): 450 nm
- Energy source: E26, AC120V
- Lifetime hours: 15,000 hours, based on 3 hours of use per day
- Operation temperature: -4º - 113º F
- Beam angle: 720º
- 1 year warranty
User Manual
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4.6 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
5/5
Format: Paperback
A great book written by a great man
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Great insight into stalins worldview
Format: Paperback
Shows a contradicting world view than western sources say. Stalin was clearly educated and articulate
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2024
★★★★★ 5
This is a supplemental reading to assist with your understanding ...
This is a supplemental reading to assist with your understanding of dialectical materialism. I strongly suggest you read this with Socialism: Scientific and Utopian by Engels if you wish to have a conceptual understanding of dialectical materialism without going through massive tomes by other authors.
Stalin writes fairly straightforward, and he covers a basic introduction of what dialectical and historical materialism are and how they work.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 7, 2017
★★★★★ 5
Stalin's Dialectical and Historical Materialism is Reviewed
The English language edition of this pamphlet was first published by International Publishers. I first purchased this pamphlet in about 1977. pamphlet was actually printed in 1973.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2015
★★★★★ 5
definitive and final statement
This is the definitive and final statement on marxian dialectical materialism. The best concise exposition that has been written on the subject.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 28, 1999
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