You can find Irvine replacement springs for both premium and valu-line RV roller shades on Elkhart RV Parts' website. For premium roller shades, select the slow rise version that fits your size, and for valu-line roller shades, choose the appropriate 1 version spring. If you receive the wrong size, Elkhart RV Parts offers a return process where you can request a return label to send back the incorrect items. Simply provide your order number to initiate the return, and customer service will assist you with the next steps.