As a supplier of warehouse cages for Yantai, Xintongnuo generally recommends starting with a standard size. Standard sizes are produced in high volume at high output, and the total cost is lower than a non-standard build. Without special dimension requirements, a standard size is the better deal. Standard sizes: A-3 800*600*640mm, 50*50mm mesh, 6.0mm wire diameter, load capacity 800kg A-5 1000*800*840mm, 50*50mm mesh, 6.0mm wire diameter, load capacity 1200kg A-7 1200*1000*890mm, 50*50mm mesh, 6.0mm wire diameter, load capacity 1500kg Standard sizes are 800*600*640, 1000*800*840 and 1200*1000*890. If a standard size does not meet the need, a non-standard cage is the way to go. For a non-standard cage, outer dimensions matter most, then load requirements and usage needs. To order a non-standard cage, contact Xintongnuo sales.