What size main supply tubing is supplied with the Manabloc packages?
A. None. The Manabloc Packages are configured “Manabloc Forward”, which means they contain the std. tubing, fittings, supplies, etc starting at the Manabloc and ending at the fixtures. The Manabloc Packages include two MSA45 3/4″ threaded main supply fittings and one ECAP1 end cap (for the unused main supply port when not plumbing the water heater through the Manabloc). A low cost upgrade to 1″ threaded main supply line fittings is available and recommended for larger Manablocs MSA55(upgrade). Main supply line packages are available separately in both 3/4″ and 1″ Pex sizes, and include tubing, fittings, and installation supplies for a typical finish plumb.