Pyramidal Microwave absorber is carbon and retardant chemicals loaded polystyrene absorber, it`s designed to give excellent performance at broadband.Features:Rigid structure so that it does not sag under it`s own weight even higher than 2metres longExcellent performance from 30MHz to 18GHz and does not suffer the compromises of the ferrite + pyramidal hybrid systemBe easily mounted using kits, no glueFire retardant to UL94 HBF, DIN4102-B2, NRL8093 RoHS and REACH compliantZero shedding(clean room class ISO14644-1 class 4)Longer service life expectancy(20years+) JA microwave pyramidal absorber aligned light blue quadrangular pyramid, possessing goodfireproof performance which fulfills American NRL Report 8093.Servicetemperature:-50 70 . It is of good vertical incidence . oblique incidence . scattering and isolated decay performances at thewideband range. It is mainly used for subject material of anechoic chambers. Model Number Height (mm) Maximum Reflectivity at normal incidence -dB GHz Base Dimension (mm) 15 10 6 3 1.5 0.5 0.3 0.2 JA-30 30 30 30 500 x 500 JA-45 45 40 35 30 500 x 500 JA-70 70 45 40 30 500 x 500 JA-100 100 45 40 35 30 500 x 500 JA-150 150 50 45 40 35 500 x 500 JA-200 200 50 50 45 40 30 500 x 500 JA-300 300 50 50 50 40 35