Large Equipment Paint Booths - Cost Effective Solutions for Your Requirements
Updated July 2026
A large equipment paint booth is an oversized, code-compliant spray booth built to finish big workpieces such as locomotives, railcars, mobile cranes, RVs, generators, and heavy machinery. AEI Paint Booths designs, manufactures, and installs custom large equipment paint booths, blast booths, and heated air makeup systems built to meet NFPA 33 and OSHA (CFR 29.1910.107). Since 2003 we have engineered crossdraft, semi-downdraft, and downdraft booths — in sizes up to 30' wide x 20' tall x 150' deep — for equipment manufacturers and refinishers across North America.
Large Paint Booths
We offer large paint booths, blast booths, personnel lift systems, installation, and more. We will help you design the best large equipment paint booth system for your unique application and your production goals. We will work with you to provide the most cost effective system possible.
Your project will be a team effort so we will work closely with your architects, engineers, and general contractors to provide a smooth seamless process.
Paint Booth Airflow Options
The optimum airflow pattern through a paint booth depends on what you are painting. We will consider the parts your are painting, the facility layout, desired throughput, and several other factors to recommend the best airflow for your application.
Crossdraft Large Equipment Paint Booths: The air makeup unit pushes air into the booth through the filtered intake columns in the front corners of the booth. The clean filtered air flows through the work area and is pulled through the filtered exhaust columns in the rear corners of the booth by an exhaust fan.
Semi Downdraft Large Equipment Paint Booths: The air makeup unit pushes air into the booth through the filtered intake plenum on top of the booth above the front doors. The air flows through the work area and is pulled through the filtered exhaust chamber at the rear of the booth by an exhaust fan.
Downdraft Large Equipment Paint Booths: The air makeup unit pushes air into the booth through the full length filtered intake plenum on top of the booth. The air flows through the work area and is pulled through the filtered exhaust chambers in the booth side walls or the grated floor pit by exhaust fans.
Code Compliance
All of our paint booths are designed to meet or exceed the requirements and recommendations of the National Fire Protection Association (NFPA), Standard Number 33, as well as the Occupational Health and Safety Administration (OSHA) CFR 29.1910.107.
Project Process
Selecting a Supplier
The first part of the process is selecting the right supplier. Experience and an understanding of your projects specific requirements are key to you getting the most out of your paint booth system. We have over 20 years experience in working with clients in need of large paint booths. We also have over 20 years experience with equipment manufacturing and industrial re-finishing processes and facility workflow. We know the right questions to ask to provide you with the best system for your unique application.
30' Wide x 20' Tall x 150' Deep Split Cabin Booth
Finishing Process Objectives
We will work with you to meet the objectives of your finishing process. How many items a day do you want to move through the system? How will the items being finished be moved through your facility? Are you painting newly manufactured items or refinishing items? Are you painting sub-assemblies or assembled units? If you are refinishing do you need to clean and treat the surfaces before painting? All important questions to ensure that you get the best system for your unique application.
Selecting Paint Booth Type
Once we have an idea of your objectives and work flow we can help select the best style booth airflow for your application. We will work with you to select the best airflow pattern for your application. The shape and size of items to be painted will help determine the best airflow type for your process. Your workflow and process time needs will help us determine if you need a fast drying cycle and if you might benefit from having product doors on each end of your paint booth.
Project Management
The installation of your new paint finishing system is critical to the seamlessness of the process. Many disciplines are involved in the installation process. Engineering, permitting, mechanical, electrical, plumbing/gas, as well as considerations of the existing building or new building. Our attention to detail in project management and coordination with all contractors, architects, and engineers will provide a seamless installation process.
What Comes Standard on an AEI Large Equipment Paint Booth?
How to Select a Paint Booth Airflow:
We will help you select the best airflow for your specific application and work flow. The shape and size of your work will help us determine what airflow pattern will best control your overspray, provide a clean dirt free work area, and protect your painters.
Selecting the correct airflow for your paint booth will often be unique to your process. There is no best airflow for all applications. Are you painting complete items or sections of items? Are you using multiple colors? Are you painting the same size work every time or does the size vary?
Work flow and shop space for staging will help determine if an accelerated dry cycle might be right for you. If you are applying multiple coats a flash cycle may increase throughput.
Paint Booth Airflow Options:
Crossdraft Airflow: Air enters the booth through filtered intake columns inside the front corners of the booth for a pressurized booth. The clean filtered air flows through the work area and is pulled through the filtered exhaust chamber at the rear of the booth by an exhaust fan.
Semi Downdraft Airflow: The air makeup unit pushes air into the booth through the filtered intake plenum on top of the booth above the front doors. The clean filtered air flows through the work area and is pulled through the filtered exhaust chamber at the rear of the booth by an exhaust fan.
Downdraft Airflow: The air makeup unit pushes air into the booth through the full length filtered intake plenum on top of the booth. The clean filtered air flows through the work area and is pulled through the filtered exhaust chambers at floor level in the side walls of the booth or by a filtered grated pit in the floor of the booth by an exhaust fans.
Construction:
Panels: Panels have Pre-Punched Bolt Holes on 6” Centers. Panels are fabricated from 18-gauge prime quality G-90 galvanized steel. Panels are fastened together with nuts and bolts for maximum rigidity and ease of assembly. Holes are precision CNC punched on 6” centers. Pre-punched holes assure true panel alignment.
Structural Support: Beams and columns are fabricated from formed 10 Gauge Galvanized Steel or W6x9 Steel Beams. Support is placed on maximum 10' centers for added rigidity. Support columns anchor to a concrete floor with special concrete bolts selected for your facility concrete.
Product/Personnel Doors:
Product Doors: Options for coil type roll up doors or standard swing type doors. These doors are provided with a closed cell foam rubber weather stripping seal about the perimeter and a neoprene rubber sweep seal at the threshold. The mounting hardware provided includes a panic type safety latch and four 9'' door pulls.
Personnel Access Doors with Window: Personnel access doors are provided as a double wall 18-gauge galvanized steel unit sized at 36'' x 84” and are provided pre-hung in a heavy gauge steel frame ready for mounting to the spray booth. Mounting hardware includes a panic type safety latch and two 6'' door pulls.
Exhaust System:
Exhaust Fans: A tube axial type duct fan specifically designed and constructed for use in paint spray booths and similar applications is provided for exhaust. A precision balanced, fabricated, aluminum non-sparking fan blade moves the air through the fan. Bearings are mounted in rubber isolators for smooth operation. The motor, drive, and bearings are isolated from the exhaust air stream. The bearings are sized with a minimum average life, per AFBMA, in excess of 200,000 hours when operating at the maximum RPM of the fan size.
Filtration:
Intake Filtration: Intake air filters: Rated by UL as Class 2 and are EPA registered as environmentally safe. Filters are self-supporting in an internal frame - 20'' x 20'' x 1''.
Exhaust Filters: Filtration has six layers of expanded paper to create an alternating labyrinth upstream of a heavy polyester backing. This combination yields higher efficiency while still providing ample holding capacity in a wide variety of applications. Filters are lab tested with over a 99.8% particulate removal efficiency. FilterLoc track is mounted to the exhaust chamber providing a tighter seal to help eliminate overspray bypass. The roll media is secured in the FilterLoc track using the provided FilterLoc Tool. The new technology provides savings by allowing the utilization of roll media reducing overall cost and decreases overall filter change out time.
LED Lighting:
LED Illumination: • Fixtures are Maintenance-Free rated for Class I Division II Groups A, B, C, D; Class II Division II Groups F and G. Fixtures are ETL listed and approved for their intended use and placement. Lighting is provided by innovative LED technologies consisting of multiple high efficiency flux boards paired with high efficiency drivers. Fixtures are designed to accept either 120VAC or 277VAC power. Driver and boards carry a 5-year limited warranty.
Air Makeup Units - Heat and Cure:
Our heat and cure systems are designed to help you move your work through the process as quickly as possible. We offer a basic heat and cure system and another system with heat, flash, and cure modes. The flash mode allows you to dry the paint between coats. Works great for both solvent and water based paints. Our standard paint booth heat and cure system features include a Variable Air Volume System (VAV) and Automatic Booth Pressure Balancing System (AB) which make our air makeup units stand out from the rest. On large equipment booths this can save a lot on operation costs.
