Buy Zinus Quick Lock 14 Inch Metal Platform Bed Frame with Headboard, Mattress Foundation, No Box Spring Needed, King: Beds – Amazon.com FREE DELIVERY possible on eligible purchases Platform-style padded frame with grey upholstery and low-profile 13 inch height Strong mattress support prevents sagging and increases mattress life / No box spring needed. Alright now I’m going to actually hush up for once (what?!) and let my husband take over the rest of this blog post. Because when it comes to building a custom king size bed frame, well, he’s your man! .