Quantic PMI Model No. LP2400-3G-SFF is a Lowpass Filter that offers extremely high Q with broadband performance and typical insertion loss of 3.5 dB. Ideal for eliminating broadband harmonics and spurs.  Low Pass Filter has a cutoff frequency of 2400 MHz and a typical return loss of 10 dB. This model has SMA female connectors and a size of 2.00" x 1.00" x 0.50".  https://www.pmi-rf.com/product-details/lp2400-3g-sff