Uponor 21128A Pex-a Tubing 1 in Cts Red 100 Ft Roll

Product Description

The UPONOR 21128A is a 1-inch CTS (Copper Tube Size) red PEX-A tubing supplied in a 100-foot roll. PEX-A is manufactured using the Engel peroxide cross-linking method, which produces the highest cross-link density of the three PEX grades and gives the tubing its characteristic flexibility and shape memory. This product is used in residential and commercial hot and cold water distribution systems, radiant heating, and hydronic applications. Licensed plumbers and mechanical contractors are the primary installers. The red color coding indicates hot-side service in standard plumbing practice.

This tubing is suited for potable water supply lines, in-floor radiant heating loops, and snow-melt systems. The 100-foot roll format is practical for residential rough-ins and mid-sized commercial runs where long continuous lengths reduce the number of fittings required. CTS sizing means the tubing is dimensionally compatible with standard 1-inch copper tube fittings and expansion-style or crimp-style connection systems. It is commonly run through walls, floors, and ceiling cavities without the need for soldering or open flame.

Key Features

• PEX-A cross-linking method provides superior flexibility and kink resistance compared to PEX-B or PEX-C
• Shape memory allows kinked sections to be repaired with a heat gun without cutting out the tubing
• 1-inch CTS sizing is dimensionally compatible with standard copper tube fittings and expansion rings
• Red color coding identifies hot-side or heating-loop service at a glance
• 100-foot continuous roll minimizes fittings and potential leak points in long runs
• Suitable for potable water, radiant heating, and hydronic distribution applications

Compatibility

Designed as an OEM-style supply tubing for use with 1-inch CTS expansion fittings, crimp fittings, and clamp fittings compatible with PEX-A construction in residential and commercial plumbing and hydronic systems.

Installation Notes

Installation should be performed by a licensed plumber or mechanical contractor in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and depressurize the line before making any connections. Use only fittings and connection tools rated for PEX-A tubing at the specified tube size. Support spacing and minimum bend radius requirements should follow the tubing manufacturer guidelines and applicable code tables.

Technical Specifications

• Tubing Type: PEX-A (Engel Method)
• Size: 1 inch CTS
• Color: Red
• Roll Length: 100 feet
• UPC: 813927011857
• Order Increment: 1

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: 21128A