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  5 inch King Metal Box Spring, Durable Mattress Foundation, Fabric Cover Included, Easy Assembly $ 31.66
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  King Box Spring, 9 Inch Metal Box Spring King Size, Heavy Duty Mattress Foundation, Easy Assembly, Non-Slip, No Noise $ 32.93
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  Maenizi 9 inch King Heavy Duty Bed Base Metal Mattress Foundation with Fabric Cover, 3000lbs Max Weight Capacity, Noise Free, Easy Assembly $ 31.74
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  Maenizi King Box Spring Bed Base 7 inch Heavy Duty Metal Mattress Foundation with Fabric Cover, 3000lbs Max Weight Capacity, Noise Free, Easy Assembly $ 28.58
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  Wayton, 8” Split Fully Assembled Box Spring for Mattress, King $ 91.95
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  Zinus 4 Inch Low Profile Metal Box Spring with Wood Slats King $ 75.93
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  Continental Sleep, 4-Inch Fully Assembled Wood Split Low Profile Traditional Box Spring/Foundation for Mattress Set, King(Fold), Black $ 92.52
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  Lutown-Teen King Box Spring Bed Base 6 Inch Heavy Duty Metal Mattress Foundation with Fabric Cover, 3000lbs Max Weight Capacity, Noise Free, Easy Assembly $ 58.33