The ABB APP4W is a panel board filler plate designed to fit a 44-inch width and stands 4 spaces high, making it a solid choice for organizing and protecting your control panel setup. Part of the Spectra Series, this component helps maintain neatness and safety by covering unused spaces in panel boards. You can find the APP4W conveniently available through BSP Automation, ensuring easy access to reliable automation parts. Sometimes called by its numeric code, 783175253272, this filler plate is a straightforward solution for maintaining a clean and efficient panel layout.