Video Mount Products. The IWB-1 flat panel In-Wall Box Adapter gives A/V installers the opportunity to recess flat-panel TVs within the wall between 16-inch studs. With a load capacity up to 75 pounds, the adapter accommodates most 15- to 32-inch monitors and includes cable and electrical knockouts. The adapter works in conjunction with the maker’s LCD-1 Multi-Configurable LCD Monitor Wall Mount or LCD-2537 Multi-Configurable Universal Mid-Size LCD Monitor Wall Mount, both sold separately. 877.281.2169.