IT will flow 1154 cfm with a 1.5 psi drop. each side of the core is 6"L x 12"H x 4.5" D. thats a 12" x 4.5" charge face with 6" of tube length. stillen's is 8" X 3.5" with 9" of tube length. So it has even less pressure drop than a stillen SMIC But flows a ton more. At 1.5 psi drop the stillen will flow 280 cfm per side=560 total= around 373.33 Mine should flow 577 per side=1154 total= around 769.33 I am excited to see the results.