The Nordic Ware Natural Aluminum Commercial Baker's Half Sheet is widely praised for its quality and versatility. Users appreciate the heavy-duty construction that resists warping, although a few reported minor warping issues. The sheets provide even heat distribution, resulting in consistently well-baked goods. Many reviewers noted the ease of cleaning, especially when used with parchment paper or silicone mats. The various sizes available (including quarter and eighth sheets) are appreciated for different purposes, from large batch baking to small servings in toaster ovens. However, users should note that these sheets are not dishwasher safe and may discolor if not hand-washed. Some users mentioned the importance of measuring before purchase to ensure proper fit in ovens or storage spaces. Overall, the majority of reviewers found these baking sheets to be durable, efficient, and a worthwhile investment for both home cooks and baking enthusiasts.