Post Purlin (Single Slope)
The Single Slope system is a solid, universal, shade system. Great for small or large applications. Covered parking, equipment storage, supplies protection, and more.
About the Post & Purlin System
The Absolute Steel Single Slope 2-Car Carport is one of the most durable and reliable freestanding steel carports on the market. Engineered for strength, it’s rated to handle 30 pounds of snow per square foot and withstand winds up to 90 mph.
Quick, Easy Assembly
Our standard kit is designed for hassle-free installation. It includes just 33 parts—posts, panels, and trim—with only 12 pieces making up the frame. The unassembled kit fits neatly into the bed of a pickup truck for simple transport to your site.
Custom Sizes Available
Need a larger or uniquely sized carport? Whether it’s 60′×40′ or 120′×40′, our team can help design a freestanding metal cover to fit your specifications. While some limits apply, our professionals will work with you to ensure your project gets the right solution. Minimum size begins at 360 square feet, but dimensions are flexible to your needs.
Also known as “single-slope,” post-and-purlin is the simplest and most economical of carport designs. Ideal for covered storage of vehicles, equipment, supplies and finished goods. Excellent for high-volume, no-frills covered parking.
Versatile Applications
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Parking for cars, trucks, and RVs
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Standalone or attached to an existing structure
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Boats, ATVs, and equipment storage
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Livestock and feed cover
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Play or shaded areas
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Apartment or commercial parking
Simple Design Details
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Only 33 total parts*
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12-piece steel frame*
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Posts, panels, and trim included
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Concrete base-mount plates available
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Compact enough for pickup-bed transport*
* = On base model 18′×20′ (360 sq. ft.)
Built for Strength & Longevity
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All-steel construction
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26-gauge white painted panels
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Rated for 30 lb. snow load and 90 mph wind load
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Optional engineered plans stamped for your state
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25-year panel paint warranty
Unlike lightweight aluminum carports rated for just 10–20 lbs. of snow, the Single Slope boasts a 30 lb. snow load and 90 mph wind rating, independently verified by third-party engineers.
Premium Materials
Our rugged 26-gauge R-panel roof deck features a siliconized polyester finish (top and bottom) guaranteed for 20 years against fading, chalking, or peeling. Additional specs:
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26-gauge full hard (80 KSI) steel
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Class 90 uplift test rating (UL580)
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Class 4 impact resistance (UL2218)
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Class A fire resistance (UL790)
Frame system:
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3”×3” galvanized steel columns (14 Ga./55,000 KSI)
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10”×2.5” galvanized stiffened steel C-purlins (14 Ga./55,000 KSI)
Standard Configuration
Our base model measures 18′×20′ (360 sq. ft.) with a clearance of 7’2″ on a concrete mount or 7’11″ on a ground mount. Concrete base plates are available. Larger configurations are available on request.
Shipping & Pricing
Customer pickup is available at our Texas and Arizona facilities, with nationwide shipping offered for an additional charge—contact us for rates.
We’re confident this is one of the best values in steel carport kits on the market, and we encourage you to compare before you buy.
We also offer SofTop® Shade Canopy Kits for additional shade and shelter options.
Original engineered plans stamped and sealed by a state-licensed engineer are available for an additional fee. Load-bearing ratings depend on proper installation.
Please call us toll-free at 1-877-833-3237
with any questions or quote needs! We are here to help.
Customer service and pricing available from 8:00 am to 5:00 pm Arizona time Monday – Friday.