According to national standards, the wall thickness of the low-voltage distribution box should not be less than 1. With the aim to contribute to the sustainability of packaging, the FEFCO Corrugated Packaging Recyclability Guidelines (update 2025) provide the industry with a practical set of tools to implement in the recycling of paper and board to ensure the optimal use of natural resources and minimise their. This guide will delve into the best practices for choosing the correct size and thickness of corrugated boxes based on specific needs. Selection Recommendations The size of a corrugated box includes external dimensions, internal. In practice, internal dimensions are industry standards used to measure the corrugated boxes in order of Length x Width X Depth (L X W X D). where, Length (L) refers to the longer side of the box, width (W) refers to the shorter side along the side, and depth (D) refers to the height of the box. ASTM's paper and packaging standards are instrumental in the evaluation and testing of the physical, mechanical, and chemical properties of various pulp, paper, and paperboard materials that are processed primarily to make containers, shipping boxes and parcels, and other packaging and labeling. Enforceable corrugated specifications prevent “meets spec” disputes by defining performance requirements, naming test methods with conditioning protocols, and establishing documented acceptance criteria before problems occur.