Replacement black rheostat knob for Heat N Glo, Heatilator and Quadra-Fire gas fireplaces. Fits the following models:

Quadra-Fire Gas Fireplaces:

• Castile-Gas
• COLBAY-FS (PRE-ENHANCED)
• GARNET-MBK & GARNET-T
• SAPPHIRE
• SAPPHIRE-D
• Topaz
• I30SE-LC & I30SE (AFFINITY)
• QFI30
• QFI30-C
• QFI35
• QFI35-C
• QVI25
• QVI30
• QVI30S
• QVI35
• QVI35S
• QVI-30FB
• QVI-30FB-S
• QVI-35FB-S

Heat N Glo Gas Fireplaces:

• 4000INC
• 4000INS
• AT-GRAND
• AT-GRAND-B
• AT-GRAND-C
• AT-GRAND-D
• AT-SUPREME
• AT-SUPREME-B
• AT-SUPREME-C
• AT-SUPREME-D
• AT-ZC
• AT-ZC-B
• BAY-INSERT-NS
• COSMO-I30
• COSMO-I30-C
• COSMO-I35
• COSMO-I35-C
• COSMO-GXT-IPI
• COSMO-SXT-IPI
• GRAND-I35
• GRAND-I35-C
• GRAND-I35-SP
• GRAND-XT
• GRAND-XTS
• HNGINS-30-SP
• HNGINS-35-SP
• PALOMA
• SL-INSERT-B
• SUPREME-I30
• SUPREME-I30-C
• SUPREME-I30-SP
• SUPREME-XT
• SUPREME-XTS
• ZC-XT
• 6000TRXI
• 6000TRXI-IPI
• GEM-36
• GEM-42
• SL-750TRSFHHIPI
• MISSION-BAY
• TIARA I-B
• TIARA I-AL-C
• TIARA I-C
• TIARA II-B
• TIARAII-AL-C

Heatilator Gas Fireplaces:

• ADI60
• ADI60S
• NDI30-C
• NDI30-SP
• NDI30-SPFK
• NDI35-C
• NDI35-SP
• NDI35-SPFK

HHT part # SRV100-512
Replaces part # 100-512
OEM HHT part

May fit other models, please check your owner's manual for part number compatibility.