Thermal Barrier Thresholds These thresholds are designed to eliminate the transfer of hot and cold temperatures from one side of the threshold to the other. Pemko 252X2_FG Thermal Barrier Threshold Pemko 252x2SSFG Saddle Threshold Pemko 252X3_FG Thermal Barrier Threshold Pemko 252x3SSFG Saddle Threshold Pemko 252x4SSFG Saddle Threshold Pemko 252x5_FG Thermal Barrier Threshold Pemko 252x6_FG Thermal Barrier Threshold Pemko 253X3_FG Thermal Barrier Threshold Pemko 253x3SSFG Saddle Threshold Pemko 253X4_FG Thermal Barrier Threshold Pemko 253x4SSFG Saddle Threshold Pemko 253x5_FG Thermal Barrier Threshold Pemko 253x6_FG Thermal Barrier Threshold Pemko 254X4_FG Thermal Barrier Threshold Pemko 254x4SSFG Saddle Threshold Pemko 254X5_FG Thermal Barrier Threshold Pemko 255X5_FG Thermal Barrier Threshold Pemko 255x6_FG Pemko 256x6_FG Saddle Threshold Pemko 273x292_FGPK Thermal Barrier Threshold Pemko 273X3_FG Thermal Barrier Threshold Pemko 273X4_FG Thermal Barrier Threshold Pemko 274X4_FG Thermal Barrier Threshold Pemko 274x6_FG Thermal Barrier Threshold Pemko 274x292_FGPK Thermal Barrier Threshold Pemko 2746x292_FGPK Thermal Barrier Threshold Pemko 278x292_FGPK Thermal Barrier Threshold Pemko 279x292_FGPK Thermal Barrier Threshold Pemko 2746x6_FG Saddle Threshold Pemko 573x5_FG Saddle Threshold