RV Carports
18x45 Class A RV Garage
SKU: GB1761
Starting at
$11,730*
Delivered & installed — final price varies by location.
*Accessories shown are not included in the base price
18' × 45' × 14'
810 sq ft · Vertical Roof
Check Your Area
Delivery, certifications & load requirements
This 18x45 Class A steel RV garage gives you 810 sq. ft. of enclosed steel space for a Class A motorhome, camper, travel trailer, boat trailer, oversized vehicle, tools or RV gear.
The 18-foot width gives you room for parking and side clearance. The 45-foot length gives you deeper space for longer RVs, storage bins, outdoor gear, spare parts or travel supplies.
This garage has a 14-foot height, vertical roof, and one 12x14 roll-up garage door for easier RV access. The 14-foot door height is useful for motorhomes and campers, but you should still measure your RV from the ground to the highest roof point, including AC units, vents, antennas, ladders and solar panels.
It uses a 14-gauge steel frame and 29-gauge metal panels. The vertical roof helps rain, snow, leaves and debris move off the building better, which matters on a 45-foot-long RV garage.
Every building is custom made. You can change the height, door size, colors, walk-in doors, windows, insulation, anchors, panel layout and certified wind or snow options based on your RV size, property and local code needs.
Delivery and professional installation are included. Call Garage Buildings to get your 18x45 Class A RV garage quote.
Technical Details
Specifications
| SKU | GB1761 |
| Area | 810 SQFT |
| Frame Gauge | 14-Gauge (12-Gauge upgrade available) |
| Panel Gauge | 29-Gauge |
| Material | Galvanized Steel |
| Brand | Garage Buildings |
| Gauge | 14 Gauge Steel Frame for added strength |
| Width | 18' |
| Height | 14' |
| Length | 45' |
| Best for | Class A RVs, motorhomes, campers, travel trailers, boat trailers, oversized vehicles and RV supplies |
| Best use | This building works best as a long enclosed RV garage for buyers who need roof, wall and door protection for a motorhome or camper instead of an open RV carport. |
| Delivery | FREE Delivery to Your Building Site |
| Roof Style | Vertical |
| Roof color | Quaker Gray |
| Roof pitch | 3/12' |
| Trim Color | Quaker Gray |
| Wall Color | Pewter Gray |
| Garage Door | 1 |
| Peak Height | 16.3' |
| Roof Length | 46' |
| Wall Panels | Vertical |
| Intended use | RV storage, motorhome garage, camper storage, trailer storage, enclosed vehicle protection |
| Metal Panels | 29 Gauge Metal Panels |
| Service Area | Nationwide |
| 2D Floor Plan | Yes |
| Building type | Enclosed steel RV garage |
| Installation | FREE Installation on Your Pad |
| Top use cases | Class A RV storage, motorhome storage, camper garage, travel trailer storage, boat trailer storage, RV gear storage, oversized vehicle storage, seasonal vehicle storage, enclosed equipment storage |
| Included parts | Steel frame, roof panels, wall panels, trim, 12x14 roll-up door, anchors, hardware, delivery and professional installation. |
| Wainscot Color | Quaker Gray |
| Framing Warranty | 20-Year Framing Warranty |
| Garage Door Size | (1) 12’x14′ Garage Door for easy RV access |
| Vehicle capacity | 1 Class A RV, motorhome, camper or oversized vehicle, depending on exact size |
| Paneling Warranty | 10-Year Paneling Warranty |
| Main build details | 18x45 enclosed steel RV garage, 810 sq. ft. of space, 14-foot side height, estimated 16 ft 3 in. peak height, vertical roof, 12x14 roll-up door, 14-gauge frame and 29-gauge panels |
| Weather protection | Made to help keep RVs, campers, trailers and stored gear covered from sun, rain, wind, snow, leaves and daily outdoor exposure. |
| Customization options | Door size, taller height, walk-in doors, windows, colors, insulation, anchors, panel layout, roof style and certified wind or snow options. |
| Workmanship Guarantee | 30-Day Workmanship Guarantee |
Can't Find the Right Fit? Design Your 18x45 Class A RV Garage in 3D
Customize your 18x45 Class A RV Garage with different roof styles, colors, dimensions, garage doors, walk-in doors, windows, insulation, lean-tos, certification options, and other available upgrades.
Our free 3D Building Designer lets you personalize every detail, compare different layouts, and visualize your building before requesting a quote—helping you design the perfect structure for your property and needs.
Flexible Payments
Affordable Payment Options
Traditional Financing
Low monthly payments with competitive rates through our financing partners. No early payoff penalties. Get approved in minutes.
See Financing OptionsRent-to-Own — No Credit Check
Bad credit? No credit? No problem. Get your building now and pay monthly. Our trusted RTO partners — EZPay Buildings (exclusive 48-month terms for renters), RTO National, and Heartland (up to 60 months) — offer no-credit-check, same-day approval for amounts up to $20,000.
Call For Free QuoteReady to Make the 18x45 Class A RV Garage Yours?
Get a personalized quote with your exact customizations — color, doors, windows, and more. It's free, fast, and there's zero obligation.
Got Questions? We've Got Answers
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Why choose a vertical roof for an RV garage?
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Is delivery and installation included?
Essential Resources
Before You Buy
Everything you need to make a confident decision on your metal building purchase.
Talk to a Building Specialist
Not sure about sizing, roof style, or options? Our team has 29+ years of experience and will help you find exactly what you need.