Trim dimensions vary by product and application, so exact measurements depend on the specific trim part. For example, some RV trim pieces like roof or corner trims measure approximately 92 inches in length with widths ranging from 1/8 inch to 1-1/4 inches. The top portion may be larger than the bottom in some designs, but this varies by model. For precise measurements, please provide the specific trim product name or model number. For Furrion convection microwave air fryer trims, detailed measurement images are available on the product page at ElkhartRVParts.com to help determine exact sizing.