Plenumline™ is an extremely resilient acid waste system, made from flame-retardant PVDF thermoplastic, designed for challenging conditions including highly restrictive return air plenum applications and high-temperature corrosive chemical waste situations. Plenumline mechanical joint acid waste systems easily displace costly and difficult-to-install glass and metal systems. With Plenumline, time-consuming methods associated with conventional heavy and brittle systems are replaced by a time proven mechanical joint system that takes only seconds to complete. Plenumline Mechanical Joint Loose Nut - Reducing Couplings LN x MJ are available in 2 x 1-1/2", 3 x 1-1/2", 3 x 2", 4 x 2" and 4 x 3" sizes.

• For use in Plenunline™ acid waste systems.
• Operating temperature range from -40°F (-40°C) to 285°F (140°C).
• Ideally suited for plenum applications.
• Can be disassembled and re-used.
• Mechanical joints.
• Manufactured from Flame Retardant PVDF.
• All plastic construction (no galvanic action, electrolysis or corrosion).
• Flame spread index of 5 and smoke development index of 35 as tested in accordance with ASTM E84 and UL723).
• IAPMO-listed.
• NSF listed.
• Certified to CSA B181.3.
• listed to CAN/ULC-S102.2.
• Meets ASTM F1673.
• Loose Nut - Reducing Couplings LN x MJ are available in 2 x 1-1/2", 3 x 1-1/2", 3 x 2", 4 x 2" and 4 x 3" sizes.