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  Mammoth 8 Bar Fluence SPYDER 2i HLG 550 V2 Gavita 1650 E
Diodes LM301B  - LM301B  -
LED pcs 1728 - 1152 -
Dimensions 47"x42"x4.5" 43"x47"x4.3" 26"X20"x3" 40"x40"x2"
Wattage 640 630 480 646
PPF µmol/s 1720 1700 1178 1650
PPF/Watt 2.7 2.7 2.5 2.6
PPF/$ 1.78 1.13 1.12 1.18
MSRP $969 $1,500 $1,049 $1,399
Savings vs.  - $531 $80 $430