Watts Radiant now carries RadiantPEX in coils and sticks in the following sizes: 1 1/4", 1 1/2" and 2". Compression fittings are offered for all sizes 1" to 2". Crimp fittings are available for 1" and 1 1/2" sizes. RadiantPEX is the less expensive choice compared to copper for distribution lines to commercial or large residential zones, snow melt zones or other hydronic applications. For more information, please call 800-276-2419 or visit www.wattsradiant.com.