United Paper Guide for RT18, RT26, RT37S, RT51S $14.00 United Paper Guide for RT18, RT26, RT37S, RT51S quantity Add to cart Category: Replacement Parts Description Description Replacement paper guide for RT18, RT26, RT37S, & RT51S. Also Available at Office Depot Also Available at Staples Related products T15 – Paper Guide for T15 Trimmer $14.00 Add to cart Rotary Cutting Blade for RT18, RT26 RT37S, RT51S $29.00 Add to cart C12 – Cutting Sticks for C12 $86.00 Add to cart C12 – Replacement Blade for C12 $169.00 Add to cart