The Master Flow 12 in. x 4 in. x 6 in. 90 Register Box is designed for 6 in. round ducts. This 30-Gauge register box is made of zinc-coated galvanized steel. This register box has a maximum temperature rating of up to 390F and a minimum temperature of as low as -100 degree F.
- u003ca href=
- Designed for 6 in. round ducts
- 30-Gauge
- Features a minimum temperature rating of -100 degree F and a maximum temperature rating of 390 degree F
- 6 in. D x 9 in. L

















Reviews
There are no reviews yet.