Permanently, assuming they're really glass https://www.amazon.com/dp/B001BE3UM4/ref=cm_sw_r_apan_glt_i_ZMJ7FZK8RE3VD5P9RDWW

Removable https://www.amazon.com/dp/B083TBNCT6/ref=cm_sw_r_apan_glt_i_dl_C0RZQCMRH8MJ3Q92AWMX

Or you could get a backdrop of some kind