{"aspect_id":"AS131","aspect_name":"thermal-insulance","aspect_reference":"NIST SP-811","aspect_symbol":null,"name":"thermal-insulance degree Fahrenheit hour square foot per British thermal unit (th)","scale_id":"SC999","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":null,"unit_id":"UN1040","unit_name":"degree Fahrenheit hour square foot per British thermal unit (th)","unit_reference":"https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#D","unit_symbol":"\u00b0F.h.ft2.Btu_{th}-1"}