These corrosion-proof PVC Blast Dampers are for the construction of exhaust ventilation systems. NOTES: Fittings are triple bead welded. Pictures are to represent style of fittings only; color is gray.
- PVC 1120, ASTM D-1784, Type 1, Grade 1, Cell Class 12454-B
- Dampers are furnished with a three position locking pin (open, half open & closed)
- Temperature range: 33°F to 140°F