TACTICAL WALLS 1440 WALL INSERT The Tactical Wall Inserts are designed to go into your wall between standard 16a ^2 on center wall studs. SPECS 1440 is 14a ^2 x 40a ^2 Made with US sourced ABS plastic Velcro loop backing. UPDATE: 1440 Wall Inserts feature a new step-wall design to easily accommodate our new HDPE shelves which can be loosely attached or fixated with hardware to the updated insert. Mfg: Tactical Walls