50%cutonwavelength3380 10nm,50%cutoffwavelength4640 10nm,TransmittanceWavelengthRange3463~3556nm,Tavg 88%Thesubstrateandsizecouldbeavailableuponrequest.WeprovidevariousIRfilters,productsinvolvedinnearIRfilter,mid-waveIR,farIRfilters.Enquiryus,knowmoredetails.