SDR-xxx Frequency range: 10MHz ~ 2GHzThickness: 0.05 ~ 1mmAbsorption Attenuation: -3 ~-20 dB SDR-SH SDR-FLB SDR-KL SDR-KNB Frequency range: 9MHz ~ 14GHzThickness: 1 ~ 1.6 mm SDR-KNB SDR-KU Frequency range: 9GHz ~ 18GHzThickness: 1 ~ 1.6 mm SDR-KU SDR-WA Frequency range: 100MHz ~ 10GHzThickness: 0.15 ~ 1 mm SDR-WA SDR-WUF Frequency range: 900MHz ~ 5GHzThickness: 0.1 ~ 0.7 mm SDR-WUF