Uponor 5/8" MLC Fitting Assembly, R20 thread

MLC Compression Fitting Assemblies, made of heat-treated brass, connect 1/2" PEX-AL-PEX tubing to 1 1/4" Brass and TruFLOW manifolds (R20 thread). They can also be used to make other connections using R20 adapters. Note: The 3/4" MLC Fitting Assembly has R25 threads and will not thread directly onto 1 1/4" Brass and TruFLOW manifolds.