Superior BDG42 black bi-fold glass doors
BDG42 is the black bi-fold glass-door option listed for the Superior WRT4542 indoor wood-burning fireplace in the current WRT4500 installation manual. It is an optional fireplace accessory, not a firebox, gas-log set or replacement for the required chimney and hearth installation. The 42-inch designation identifies the listed model size; it is not an overall door-dimension specification.
Exact selection
| Manufacturer part number | BDG42 |
|---|---|
| Verified fireplace | Superior WRT4542 |
| Finish | Black |
| Door style | Bi-fold glass |
| Purchase requirement | Optional accessory |
Match the fireplace rating plate and exact door model before ordering. Compatibility stated here is verified for WRT4542; do not assume that every 42-inch Superior fireplace uses this door.
Installation and operation
Follow the manufacturer’s door installation, adjustment and alignment instructions. The fireplace must be square, level and plumb for proper door alignment. During wood burning, glass doors must be fully open or fully closed, never partly open. Open both doors and the flue damper when starting a fire. A vented decorative gas-log installation requires the glass doors fully open and the damper removed or permanently locked open, as specified in the fireplace and gas-appliance manuals.
Glass and surrounding surfaces become hot during operation. Follow the manual’s cool-glass cleaning and maintenance instructions, and do not operate with damaged glass. Installation and operation must follow the exact appliance documentation and applicable codes.
Manufacturer documentation
Superior WRT4536/WRT4542/WRT4550 installation and operation manual, Rev P October 2025: door operation and installation guidance, plus the exact accessory list on page 23.
