The glass retains some heat but no flame when you turn off the supply of gas

BBQ Gas Grill Flavorizer Bars Replacement Parts fits Weber Genesis 3300

long-term usage

BBQ Grill Replacement Parts for BBQTEK GSC3219TA

Heat Plates 3 Pcs Kit for Char-broil Commercial 4 Burner 463251705

67459 LP Gas Grill Manifold Valve Assembly for Weber Genesis II E-325, II E-330, II E-335, II SE-330, II S-335, II SE-335 Propane Gas Grills 8218TEXAN25 The glass retains some heatFits for Weber Genesis II 325 330 335 345 Series Gas Grills; fits for Weber 61006001, 61006599, 61006601, 61012001, 61016001, 61016201, 61016401, 61016601, 61017901, 61022001, 61032001, 61052001, 61077901, 61086001, 961016001, 961086001, Genesis II CSE 335, Genesis II E 325, Genesis II E 330, Genesis II E 335, Genesis II EX 335, Genesis II S 335, Genesis II S 345, Genesis II SE 335, Genesis II EX 335 Smart Grill, Genesis II SX 335 Smart LP Propane Gas