
Spray Booth Duct Work
Round and square duct, spiral duct, fittings, dampers, and roof components for spray booth exhaust systems.
Parts / Accessories
Exhaust Ductwork for Your Booth
California Pulse supplies the ductwork that carries exhaust from the booth fan to the outside: straight and insulated round duct, spiral duct, square duct, 90° and 45° elbows, dampers and square-to-round adapters, cleanouts, flanges, caps, roof curbs, fan stands, fan boxes, and motor covers. The tables below show every round and square duct part we sell and the sizes each one comes in.
- Proudly Made in the USA

- ETL Listed Systems Available

- Backed by Warranty

- Engineered Designs

- Decades of Experience

At a Glance
Exhaust duct sizes we sell
Round duct
Available diameters: 12", 18", 24", 30", 34", 36", 42" and 48".
| Part | Sizes |
|---|---|
| Round Duct 4' Straight | 12" to 48" |
| Round Duct 4' Straight Insulated | 12" to 48" |
| Round 90° Elbow | 12" to 48" |
| Round 45° Elbow | 12" to 48" |
| Spiral Duct 7.5' | 12" to 48" |
| Spiral Duct 10' | 12" to 48" |
| Duct Cleanout (4') | 12" to 48" |
| Duct Ring / Flange | 12" to 48" |
| Part | Sizes |
|---|---|
| ARV | 12" to 48" |
| Flashing & Storm Collar | 12" to 48" |
| Intake Cap | 12" to 48" |
| China Cap | 12" to 36" |
| Roof Curb | 12" to 42" |
| Fan Stand | 12" to 48" |
| Fan Box | 30" to 42" |
| Motor Cover | 12" to 48" |
Square duct
Sizes in inches, width x height.
| Part | Sizes |
|---|---|
| Square Duct 4' Straight | 24x24, 30x30, 34x34, 36x36, 42x42, 48x48, 60x60 |
| Square 90° Elbow | 24x24, 30x30, 34x34, 36x36, 42x42, 48x48, 60x60 |
| Square 45° Elbow | 24x24, 30x30, 34x34, 36x36, 42x42, 48x48 |
| Part | Sizes |
|---|---|
| Square Damper | 24x24, 30x30, 34x34, 36x36, 42x42, 48x48, 56x48, 58x34 |
| Damper Adapter, Square to Round | 24x24 → 24", 30x30 → 30", 34x34 → 34", 36x36 → 34", 42x42 → 42", 48x48 → 48" |
| Heater Discharge Damper | 24x24, 30x30, 36x36, 40x40, 48x48, 55x55, 60x60 |
Need a size that isn't listed? We can make any custom size your system needs. Send us your dimensions and we'll build it.

Free Resource
Get the Free Buyer’s Guide
Everything you need to size, spec, and buy the right system: finish quality, worker safety, code compliance, operating cost, and a step-by-step sizing worksheet.
Prefer to read it now? How to Choose an Industrial Spray Booth covers the same ground in the Learning Center, no form required.
Equipment
Related equipment
Control panelsAirflow, heat, lighting, and safety interlocks under one interface.
LED booth lightingSealed, high-CRI fixtures rated for classified spray areas.
Paint booth accessoriesFilters, hoses, racks, and the consumables a booth runs through.
Dust collectorsCartridge and baghouse collection for sanding, blasting, and powder.
Ready to build a custom solution for your business?
Contact California Pulse today for a consultation and discover how a purpose-built system can improve how your shop runs.
Before you specify
Worth reading first
- Service and preventive maintenanceScheduled service that keeps airflow, filters, and interlocks inside spec.
- Spray Booth Maintenance GuideFilters, fans, exhaust, seals, lighting, controls, overspray, inspection rhythm, and the signs that service is overdue.
- Technical supportTroubleshooting help for a booth that is already running.
