Integrated grid design for easier assembly; More stable and sturdy compared to others with separete frame and wire. Easier DIY installation with step-by-step diagrams. Installation Template helps make plan; Heavy cold-rolled 14 gauge steel construction provides safety loading up to 600lbs. High quality screws provided. All hardwares have gone through strict tests. Intergrated grid design for easier installation, compared to other racks which need separate installation of the frame and wire. Two boxes will be sent separately which might lead to a different delivery time. Contact customer service for tracking information. Dimensions: 96 in. L x 48 in. W x 22-40 in. H; Universal compatibility with different ceiling joists spacing.