シモンズ ビューティレスト キング 9インチ レギュラー フラット ファンデーション - 700810116-5060（2個注文必須）

The foundation is solid and does exactly what it’s supposed to—no creaking or shifting under the mattress, which I was worried about. I’m glad I ordered two as instructed, since the king setup feels stable and secure. Fits my Beautyrest 900 perfectly.

My old foundation was creaking every time I rolled over, but this 9-inch flat base is completely silent and gives my hybrid mattress the firm support it needed. It took me about 15 minutes to set up the two pieces in my king frame. No issues at all.

Finally had to swap out my old box spring for this 9-inch foundation, and it supports my hybrid mattress perfectly with no sagging. The low-profile design is great since it doesn’t eat up headboard space, though I was surprised I needed to order two separate pieces. Just make absolutely sure you nee