2021 Grand Design Imagine 2600RB Roller Shade Spring Replacement

The measurements point to a part to investigate, but they do not yet confirm the correct replacement or a complete repair-parts list. We have not verified shade-bar number 5031421 as an Irvine spring cross-reference. The 2021 Imagine 2600RB model and a Valu-Line-style appearance alone do not establish the installed shade manufacturer or revision.

Our current Irvine 3/4-inch Valu-Line spring listing has two native options: SRS-SR18S, a 14.75-inch spring listed for shade widths up to 40 inches, and SRS-SR18L, a 24-inch spring listed for shade widths over 40 inches. Your reported 49.5-inch shade width and approximately 24-inch spring align numerically with the long option. That is a catalog comparison, not confirmation that SRS-SR18L fits the original 5031421 assembly.

Confirm the maker and series from the full shade label, measure the exposed metal tube's outside diameter separately from the fabric roll and end cap, and distinguish shade width from spring-body and overall assembly length. Compare both end fittings, shaft profile, retention arrangement and original mechanism revision. Irvine's replacement-parts reference separates spring families by tube size; its images do not supply a verified 5031421 cross-reference. A stopping or holding problem also does not, by itself, identify which component has failed. Use the exact mechanism's instructions once identified. This answer does not guarantee restored operation, approve a spring modification or specify additional parts without that identification. Current product pages provide price and order options.