# 4.9 Pallet Rules

- [4.9.1 Maximum negligible height difference](/4-ui-and-terminologies/4.9-pallet-rules/4.9.1-maximum-negligible-height-difference.md)
- [4.9.2 Minimum floor area coverage](/4-ui-and-terminologies/4.9-pallet-rules/4.9.2-minimum-floor-area-coverage.md)
- [4.9.3 Minimum acceptable height of pallet](/4-ui-and-terminologies/4.9-pallet-rules/4.9.3-minimum-acceptable-height-of-pallet.md)
- [4.9.4 Default stacking orders of mixed pallets](/4-ui-and-terminologies/4.9-pallet-rules/4.9.4-default-stacking-orders-of-mixed-pallets.md)