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Grand Master LEDs Master 6 Veg 660W LED Grow LightDescription Top Features: Designed for Commercial production, vertical racks, low ceilings and grow tents IP 66 Waterproof Folding Design for fast and easy installation Knob Dimming Recommended to be controlled with the Grand Master Controller Inventronics EUM 680 5 Year Warranty Specifications Max Wattage: 660W 240V Voltage Range: 120 277 Volt and 480V available Vegetation Footprint: 5' x 5' System PPF Efficacy: 2. 71 umol joul Total output: 1815 PPF
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4.6 ★★★★★
Based on 1451 reviews
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Product Reviews
★★★★★ 5
Essential Prep for Top Scorers
Format: Paperback
As someone who was initially apprehensive about the transition from the traditional SAT to the new Digital SAT (DSAT), this test prep book has been a game changer.
What sets this book apart is its targeted approach. It's designed for students already scoring 600 or higher, focusing on the challenging questions of Module 2. This precision in practice ensures that you're not just reviewing what you already know - you're pushing the boundaries of your testing ability.
Each question is expertly crafted to mirror the format and difficulty of the actual DSAT questions, which has helped me gain confidence in handling the trickier problems, especially in the adaptive sections. The explanations are thorough and insightful, providing deeper understanding and techniques that are crucial for the exam.
Thanks to this book, I feel significantly more prepared than I ever have before. For anyone serious about aiming for the 99th percentile - this test prep book is for you!
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Reviewed in the United States on May 8, 2024
★★★★★ 5
Perfect for Serious Students!
Format: Paperback
As it states in the product details, the DSAT Prep book is great for students who already score 600 and higher.
As a teacher and tutor of the SATs (among other standardized exams), I needed more practice sets outside of the Barron's, The Princeton Review, and The College Board publications, which tend to be more mindful of beginner learners. I wasn't confident that the modules and questions from these texts were sufficiently challenging strong students. The DSAT from Edenbrook Learning removed that doubt.
I also appreciate the simplicity of the layout of the text: literally 4 tests with respective answer keys, raw score conversion, and explanations. There's no fluff — perfect for my needs.
Will recommend to colleagues and students alike!
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Reviewed in the United States on May 4, 2024
★★★★★ 5
The Best!!!!!
Format: Paperback
These practice tests are excellent. I feels so lucky to have found this prep book for my daughter right before the big test in May. The explanations for the main idea questions, fill-in-the-blank parts, and rewriting sentences were super useful and helped my daughter get a score over 700. Can't wait for the next book to come out!!
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Reviewed in the United States on May 18, 2024
★★★★★ 5
Very good practice book - very close to digital SAT
Format: Paperback
Good test book - recommended for practice
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Reviewed in the United States on November 28, 2024
★★★★★ 5
👍👍👍
Format: Paperback
Great book
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Reviewed in the United States on October 18, 2025
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