For your 2020 Tiffin Wayfarer single blackout shade, the Value Line uses standard blackout fabric and basic hardware, while the Premium Line offers upgraded blackout material and smoother, quieter, more durable hardware. Many owners prefer the Premium for better quality and longevity. To ensure the correct fit, you should measure the full roller width including mounting brackets (your roller base width of 43.5" is a key reference), the height of the fabric (33"), and the height from the roller base to the top (2.5") to verify mounting clearance. These measurements help confirm the shade will fit both the window opening and mounting space. If you want to upgrade or adjust your order, these specs will guide the selection.