18x20 Outdoor Storage Unit

This 18×20×7 steel garage provides 360 sq. ft. of enclosed storage space suitable for equipment, tools, and general outdoor storage. Finished in Ivy Green with a vertical roof design, it features one commercial steel walk-in door and four steel windows positioned on all sides for natural light and ventilation. The galvanized steel frame and fully enclosed structure are built to meet local wind and snow code requirements. It is commonly used for basic outdoor storage where a compact footprint matters. It works well for tools, lawn equipment, small machinery, or items that need to stay dry and secure without taking up much space on the property. At this height, it’s meant for storage and walk-in access rather than vehicle parking.

The vertical roof helps water and debris shed instead of sitting, which makes a difference over time even on smaller buildings. A fully enclosed steel frame keeps contents protected year-round, and windows on all sides bring in natural light so the interior doesn’t feel closed off during daytime use. The commercial walk-in door keeps access simple when you’re moving equipment or supplies in and out. Call our building experts to order your custom steel building at direct factory prices.

18×20 Outdoor Storage Unit Specs

• Building Type: Steel Outdoor Storage Unit

• Overall Size: 18′ W × 20′ L × 7′ H

• Total Covered Area: 360 sq. ft.

• Roof Style: Vertical Roof

• Roof Pitch: 4/12

• Installation Surface: Concrete

• Certification: Built to local wind and snow code requirements

• Wind Rating: Up to 130 MPH (code compliant)

• Snow Load Rating: 35 PSF

• Frame Gauge: 14 GA Galvanized Steel

• Ends: Fully Enclosed

• Sides: Fully Enclosed

• Panel Orientation: Horizontal Wall Panels

• Roof Panels: 29 Gauge Galvalume Steel (10-Year Panel Warranty)

• Wall Panels: 29 Gauge Steel, Ivy Green (10-Year Panel Warranty)

• Trim Color: Ivy Green

• Walk-In Door: (1) 36″ × 80″ Commercial Steel Door

• Walk-In Door Location: Front Wall

• Windows: (4) 24″ × 36″ Steel Windows

  • Locations: Front, Back, Left, and Right Walls

• Ideal for outdoor equipment storage, tool and supply storage & residential utility use