16 Inches
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Utopia Bedding Quilted Fitted Mattress Pad (Queen) – Elastic Fitted Mattress Protector – Mattress Cover Stretches up to 16 Inches Deep – Machine Washable Mattress Topper
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WhatsBedding Waterproof Mattress Pad Twin XL Size Cotton Top Down Alternative Filling Pillowtop Mattress Topper Cover-Fitted Quilted (Waterproof Twin XL)