View on LOZ Suggested Retail: $64.97. Split Cal King SureGuard Box Spring Encasement Pack - 100% Waterproof, Bed Bug Proof, Hypoallergenic - Premium Zippered Six-Sided Covers. SureGuard Box Spring Encasements provide 360 degree premium protection against liquids, stains, allergens and bed bugs. They are ideal for those with pets or children, or anyone suffering from bedbug infestations, asthma or dust mite allergies. Leaving your box spring unprotected from just one accident can result in a permanent stain or odor, which can be near impossible to remove. A SureGuard box spring cover will provide lasting protection for your box spring, giving you peace of mind and a safer sleep environment for you and your family.. 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.