Conex Containers for Sale in Dallas TX

Conex Containers for Sale in Dallas, Texas

If you have spent time around military bases, construction yards, or oil field staging areas in Texas, you have almost certainly heard the term “conex” or “conex box.” The word traces back to the U.S. Army’s Container Express system introduced during the Korean War to standardize cargo shipment. Over the decades the term stuck, and today “conex container” is used interchangeably with “shipping container” and “intermodal container” across large parts of the South and Southwest. Whether you call it a conex box, a shipping container, or a sea can, the product is the same: a welded Corten steel structure built to ISO specifications, fitted with twist-lock corner castings, rubber-gasketed double doors, and marine-grade plywood flooring.

The History of the Conex Box

The original CONEX (Container Express) was a corrugated steel box measuring roughly 8 feet 6 inches long, 6 feet 3 inches wide, and 6 feet 10 inches tall. The U.S. Army Transportation Corps developed it in the early 1950s to replace the breakbulk cargo methods that caused massive pilferage and damage losses in the Korean theater. The concept proved so effective that it influenced Malcolm McLean’s development of the modern intermodal shipping container in 1956. By the time the Vietnam War escalated in the mid-1960s, the military had adopted full-size 20-foot and 40-foot containers that matched the civilian ISO standard.

Today, the word “conex” in North Texas almost always refers to a standard 20ft or 40ft ISO container. When a rancher in Wise County says he needs a conex box, he means the same product that a logistics manager at the Alliance intermodal yard handles every day. The terminology is regional shorthand, not a separate product category.

Conex Container Sizes Available in Dallas

We carry four sizes at our Dallas location, each in multiple condition grades.

20ft Standard Conex. The classic 20-footer: 8 feet wide, 8 feet 6 inches tall, approximately 1,169 cubic feet of interior space. This is the most commonly requested size for residential and small commercial storage in the DFW area. It fits on a standard flatbed for delivery, requires no oversize permits, and can be placed on a gravel pad, concrete slab, or compacted earth surface.

20ft High Cube Conex. Same 20-foot length and 8-foot width, but a full foot taller at 9 feet 6 inches. The extra vertical clearance adds roughly 110 cubic feet of volume and makes the unit more comfortable for workspace conversions where insulation and ceiling finishes eat into headroom.

40ft Standard Conex. Double the length of the 20-footer with 2,390 cubic feet of internal volume and 304 square feet of floor area. Forty-foot conex boxes are the backbone of overflow warehouse storage for DFW businesses, farm equipment shelters in surrounding counties, and modular construction projects where two or more units are joined side by side.

40ft High Cube Conex. The largest unit we stock: 9 feet 6 inches tall, 2,694 cubic feet of volume. This is the go-to starting point for container home builders, mobile offices, and pop-up retail projects in Dallas where ceiling height matters for comfort and code compliance.

Condition Grades for Conex Boxes

One Trip. Nearly new. A single ocean voyage from the factory to the United States. Expect clean paint, tight gaskets, and factory-fresh plywood floors. Ideal for visible commercial placements and high-end residential use.

Cargo Worthy. Structurally sound and certified for ocean transport. Moderate cosmetic wear: surface rust spots, minor dents, faded paint. The most popular grade for Dallas buyers who want reliable weatherproofing at a mid-tier price.

Wind and Water Tight. Keeps weather out but no longer certified for shipping. Heavier cosmetic wear. Strong choice for jobsite storage, agricultural use, and projects where the exterior will be painted or clad.

As-Is. No condition guarantees. May have rust-through areas, floor damage, or door issues. Priced for buyers who plan to cut, weld, or fabricate from the steel rather than use the box as-is.

Why Dallas Buyers Search for “Conex Containers”

The conex keyword is deeply embedded in Texas commercial and agricultural vocabulary. Construction superintendents requisition “conex boxes” on purchase orders. Ranch supply stores advertise “conex storage” in their catalogs. Oil and gas field hands in the Permian Basin and Eagle Ford Shale have called their on-site lockboxes “conex” since the 1970s. If you searched “conex containers for sale in Dallas” and landed on this page, you already know exactly what you need – a rugged steel box at a fair price.

We operate our own depot inside the Dallas metro, which means your conex box does not ship from Houston, San Antonio, or out of state. That proximity keeps delivery fees low and turnaround times fast. Most DFW metro deliveries happen within five to seven business days of payment.

Common Conex Container Uses in the Dallas-Fort Worth Area

Oilfield and industrial staging. Companies servicing the Barnett Shale and Permian Basin from DFW staging yards use 40ft conex boxes to store pipe fittings, drilling consumables, and safety equipment. The steel walls resist forced entry and the sealed doors keep moisture and dust away from sensitive instruments.

Military surplus and tactical storage. Dallas is home to a large veteran community and several defense contractors. Former service members familiar with the conex system from deployments overseas often choose the same container type for personal and business storage at home. The familiarity factor – knowing exactly how the doors work, how the twist locks engage, and how to ground-stack units – makes the buying decision straightforward.

Farm and ranch use. Conex boxes dot the rural landscape of Collin, Ellis, Kaufman, Henderson, and Navarro counties. Ranchers use them for hay storage, feed bins, tack rooms, and seasonal equipment shelters. The Corten steel body resists the hail, high winds, and driving rain that characterize North Texas spring storms. A single 40ft conex holds a mid-size tractor, a round bale of hay, and a full set of hand tools with room to walk between them.

Construction jobsite security. General contractors and subcontractors across the DFW building boom use conex boxes as on-site tool cribs. Placing a 20ft conex at the job entrance eliminates daily tool transport, reduces theft losses, and gives the crew a lockable space for lunch breaks during triple-digit summer heat. The City of Arlington, the City of Fort Worth, and most Tarrant County municipalities allow temporary container placement on active construction sites without a permanent structure permit.

Small business inventory. E-commerce sellers, wholesale distributors, and seasonal retail operators use conex containers as auxiliary warehouse space. A 40ft high cube conex holds approximately 25 standard pallets, equivalent to a small warehouse bay, at a fraction of the monthly lease cost. Businesses in the Stemmons Corridor, the Cedars, and the Design District have adopted this model to keep overhead low while scaling inventory.

Disaster preparedness. North Texas sits in Tornado Alley. Municipal emergency managers, church groups, and neighborhood associations maintain conex boxes stocked with water, canned food, first-aid supplies, and tarps. The sealed steel environment protects contents from wind-driven rain and airborne debris. Several Dallas County volunteer fire departments store their overflow SCBA tanks and turnout gear inside conex units positioned at substation lots.

Creative and architectural projects. The container architecture movement is well established in Dallas. Conex boxes have been converted into backyard studios in Lakewood, art galleries in the Cedars, and micro-housing prototypes displayed at the Dallas Center for Architecture. The rigid steel frame eliminates the need for conventional load-bearing walls and simplifies permitting for structures under 400 square feet in many DFW jurisdictions.

Conex Container Delivery in Dallas and North Texas

Our tilt-bed delivery trucks cover the entire DFW metro and extend to surrounding communities within a 500-mile radius. Local deliveries within 25 miles of our Dallas warehouse carry a flat $150 fee. Extended deliveries to areas like Sherman-Denison, Waco, Tyler, Abilene, and Texarkana are priced on a per-mile basis with transparent tier rates.

Site requirements are simple: a level surface at least 10 feet wide and long enough for the container plus approach room for the delivery truck. Gravel, concrete, asphalt, and compacted dirt all work. Our driver will coordinate placement orientation with you by phone before arrival.

Pricing and How to Order

Use the instant price calculator on this page to see current pricing for any conex container size, condition, and delivery ZIP code. The calculator returns a container price, a delivery fee, and a total. No registration or phone call is required. If your project has special requirements – crane placement, permit coordination, multi-unit discounts – call our Dallas office and we will build a custom quote within one business day.