RV Shade Replacement Springs for 48-49" Shades | Irvine Valu-Line Parts

A 48–49-inch shade width and a reported 0.75-inch spring diameter do not establish a confirmed replacement part. First identify the actual shade manufacturer, mechanism and revision. Measure the tube's outside diameter and engagement profile separately from the spring end and assembly length; a nominal diameter is not proof that the shade is Irvine Valu-Line.

The 3/4-inch Valu-Line catalog reference has native SRS-SR18S/L options. Its current labels divide shade widths at 40 inches and list 14.75-inch and 24-inch spring lengths. Those are catalog labels, not an approved selection for this unidentified assembly. Irvine's manufacturer guide separates Slow-Rise, 1-inch Valu-Line and 3/4-inch Valu-Line systems; its 3/4-inch spring photo shows three size categories. The exact crosswalk to our two native options remains unconfirmed.

Likewise, the 1-inch Valu-Line reference is a different family. Its manufacturer's 30–59-inch Medium category does not make it a substitute for a reported 3/4-inch part. Compare the original label, tube end profile, spring identifiers/end fittings, controls and finished shade width against exact manufacturer documentation before choosing an option.

The product links above are identification references. Once the exact replacement is verified, use its corresponding native option and current listing terms; do not treat the historical “Large/24-inch” recommendation as a fit guarantee. The failed component, required hardware, installation procedure and repaired operation remain unconfirmed.