The 54721329 is typically installed on the electrical cabinet to protect the internal variable speed drive. This item is a side panel filter used on several different Ingersoll Rand variable speed drive compressors. This filter is designed to help keep the electrical cabinet free of dust and debris to protect the critical components.
54721329 is used on several different Ingersoll Rand models. Many of the serial numbers started with NF, NV, NFF, TA and TE.
This is an OEM filter from Ingersoll Rand. Please contact us for confirmation this filter is designed for your rotary screw air compressor.