Review on Apexstone 15Inch Spring Support L Type by Marcus Braunstein

I installed these spacers under the queen bed in my new caravan as shown. I was a little confused by the instructions in the product details, which say to install 4.79" to 5.12" away from the hinge on the lid. The picture is just the opposite. I tried this following the instructions but it didn't work so I flipped the rig over and measured 4.5 inches back from the hinge on the fixed frame under the cover and it works great with a max travel of around 50-60 Degree. . My bed is 60 x 75 with a light mattress, but we use a heavy mattress pad, so 4.5" spacing was just right with a couple of spacers. At $20 a pair I bought a spare set just in case as I'm not sure how long they will last so 3 stars for durability.