- Plenum Mechanical Joint Union Nut in 1-1/2 to 4 sizes
- Made from flame-retardant PVDF material that exhibits a flame spread index of 5 and smoke development index of 35
- All-plastic material eliminates risk of corrosion, galvanic action, and electrolysis
- Easy installation process takes just 30 seconds with simple, inexpensive tools
- Can be disassembled and re-used without damaging fittings
- Ideal for challenging conditions