One last thing to remember before you buy the Sleep Number is its limited warranty. The manufacturer suggests that customers buy a surge protector listed to UL 1449 and with a clamping voltage of 330 volts. Make sure that the surge protector is strong enough to protect the Sleep number from power surges. Otherwise, the warranty won't cover the repair costs after two years. Before purchasing a Sleep Number mattress, make sure you carefully review these warranties and policies. It offers customizable solutions for sleep
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