View on LOZ Suggested Retail: $79. SIZE UNKNOWN. Best Price Mattress 14 Inch Metal Platform Beds w/Heavy Duty Steel Slat Mattress Foundation (No Box Spring Needed), Black. Best Price Mattress metal platform bed frame/foundation is a complete support system that replaces the need for the traditional box spring. It is constructed with 100% steel to provide maximum support and durability for long-lasting use. You will find that its 9 points of contact from the mattress to the floor adds strength, stability and level support. Another feature is the 12 inches of under-bed storage to keep those needed items conveniently stored away.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.