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Serta Clarks Hill 13-in Extra Firm Queen Innerspring Mattress in the Mattresses department at Lowes.com
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Twin Mattress Molblly 8'' Firm Mattress, Cool Gel Memory Foam Mattress, More Comfortable, Twin Bed - Walmart.com
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MORGEDAL Foam mattress, firm/dark gray, Full - IKEA
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Amazon.com: Serta - 13" Clarks Hill Elite Extra Firm Queen Mattress, Comfortable, Cooling, Supportive, CertiPur-US Certified, White/Blue : Home & Kitchen
Sapphire Canyon Extra FirmMattress Only
