This double sided bedrail is perfect for those restless little sleepers. The swing down feature allows both rail to swing down out of the way when not in use. The swing down function makes it very convenient for your child getting in and out of bed. This bedrail has an all-steel construction to make it very sturdy and durable. The Double Sided Swing Down has two 20" tall sidewall's that accommodates thick mattresses and is 43" Long for added security. The Exclusive Gap Guard feature prevents your child from sliding between the mattress and bedrail. This bedrail fits up to a queen size mattress. It's easy to set up with no-tool required. This bedrail meets the safety standards set by the American Society for Testing and Materials (ASTM).