A 90-gallon cabinet does not mean you can store 90 gallons of chemicals inside. Interior space, shelf spacing, and drum shape all limit the real storage amount. This article runs the numbers so you do not find out after delivery that your drums do not fit. What 90 Gallons Actually Means 90 gallons is about 340 liters. Cabinet body size is roughly H1650 × W1090 × D860 mm. Double-door design. Standard setup includes two adjustable shelves. Note: 90 gallons is the total cabinet volume, not the liquid volume you can load. Real storage depends on drum size, shelf spacing, and ventilation clearance. 55-Gallon Drums: One Per Shelf A standard 55-gallon drum is about 570 mm in diameter and 890 mm tall. Interior cabinet height is around 1500 mm. After shelf thickness, one shelf space barely fits a vertical 55-gallon drum. Here is the problem: shelf spacing is fixed. If the bottom shelf holds a 55-gallon drum, the upper shelf gets pushed to the top position. There is almost no room for a second 55-gallon drum above. Bottom line: a 90-gallon cabinet holds one 55-gallon drum. If your main storage is 55-gallon drums, a 90-gallon cabinet is too small. Go up…