Product Description
The Honeywell, Inc. Q520A1121 is a four-sided subbase designed for use with BC7000, R4140, and R7140 models. It is a replacement for the obsolete Q520A1089. This product is ideal for trade professionals needing a reliable subbase for their temperature controller installations.
- Designed for compatibility with specific Honeywell temperature controllers
- Replaces the obsolete Q520A1089 without a direct replacement
- Made in the United States
Product Highlights
The Q520A1121 provides essential support and stability for the temperature control system.
Product Information
Standard Information
- Brand: Honeywell
- Model Number: Q520A1121







