40’W x 60’L x 18’H – (Round Style)

$31,025.00 $26,220.00

The 40x60x18 domed truss building is another of our heavy duty portable shelters. It is designed for commercial, industrial, and agricultural use. Protect your material from the elements of weather, store commercial equipment, or set up a convenient outdoor workspace for your employees. The truss style frame is the most dependable style of outdoor protection the industry has to offer.

The Big Bear Buildings products offer excellent structural integrity and maintenance-free fabric. Our cover fabric is made of the most dependable products, providing maintenance-free protection without compromising quality. The most popular uses for this structure include livestock and hay storage, sand or salt storage, large commercial vehicle storage, workshop and fabrication setup, and more. It can even be used as an airplane hangar or a riding arena for horses!



  • 18 oz. Vinyl Cover
  • 2- 12’Wx15″H
  • Mechanical Crank-Up Doors
  • 22 Cable Earth Anchor Kit
  • 2-3/8″ Galvanized Steel Truss Frame

Ventilation Kit

Ventilation Kit *

SKU: N/A Category:


Exclusive Features

  • Heavy Duty Galvanized Finish on All Steel Frame
  • Components for Maximum Strength & Long Life
  • Easy Bolt Together Design – all Pre-drilled & Cut
  • Wind Brace Support on Both Sides
  • Triple zipper doors on Both Ends
  • Two (2) complete Roll-up Door Kits
  • Protective Plastic Tube End Caps – All Open Ends
  • Standard Thread Plated Hardware Kit with Retaining Nuts & Protective SS Washers
  • Quick Assembly Wrench included
  • Heavy Duty Poly Rope for Main Cover Tie Down
  • Heavy Duty Grommets on Cover & Doors
  • Nine (9) Box Shipment
  • Fourteen (14) permanent anchors included
  • Assembles in 6 hours

Standard Specifications

Product Size
30’ Wide x 30’ Long x 15’ High
Seven (7) on 60” Spacing 2-3/8” Dia. Frame Members
Standard End Door Size
27’ Width X 10’2″ Height
Available Colors
Outer Colors: Forest Green, and Grey
All Interiors: White Only
Shipping Weight
1190 lbs shipped in Nine (9) boxes Shipped via Motor Freight

Product Documentation

  • the product spec sheet
  • the assembly manual

Box Dimensions
Box 1: 96″ Long x 19″ Wide x 5″ High
Box 2: 96″ Long x 19″ Wide x 5″ High
Box 3: 96″ Long x 19″ Wide x 5″ High
Box 4: 96″ Long x 19″ Wide x 5″ High
Box 5: 67″ Long x 17″ Wide x 5″ High
Box 6: 41″ Long x 17″ Wide x 8″ High
Box 7: 63″ Long x 9″ Wide x 6″ High
Box 8: 101″ Long x 17″ Wide x 8″ High
Box 9: 89″ Long x 22″ Wide x 7″ High
Main Cover
UV Protected Fabric Backed Poly Material 10 0z. Weight. 24 Mil. thick.
Fire Retardant Standard Main Cover & Doors meet CPAI -84 Section 5
Fourteen(14) 36” Anchors with U-Bolts & Drive Rod Std.
Stock Number 30x30x15(*)RSK
* – Color Prefix: Green, Grey, etc.

Empty tab. Edit page to add content here.