Square Duct Type Fan
Industrial Grade
High Efficiency
Quality Tested
Fans designed to fit into square ductwork systems for HVAC applications.
Key Features
- Easy duct fit
- Low profile
- Efficient air movement
- Vibration isolation
- Sealed bearings
Pricing & Quote
Get customized pricing based on your exact specifications. Our team provides competitive quotes within 2-4 hours.
Custom Pricing
Quick Response
Best Rates
Technical Specifications
Material
Stainless Steel / Mild Steel / FRP
Capacity
Customizable up to 100,000 CFM
Pressure
Up to 1500 mmWG
Temperature
Up to 450°C
Drive Type
Direct / Belt / Coupling
Efficiency
Up to 85%
* Specifications may vary based on custom requirements. Contact our engineering team for precise data.
Industrial Applications
Square Duct Type Fan Price & Cost Information
The price of Square Duct Type Fan varies based on multiple factors including specifications, capacity, materials, and customization requirements. At Primeairtech, we provide competitive pricing tailored to your exact industrial needs.
Factors Affecting Square Duct Type Fan Pricing:
- Capacity & CFM Rating: Higher airflow capacity requires larger motors and impellers, affecting cost
- Material of Construction: Mild steel, stainless steel, or FRP options at different price points
- Pressure Requirements: High-pressure variants require reinforced construction
- Drive Type: Direct drive, belt drive, or coupling arrangements
- Special Features: VFD integration, high-temperature tolerance, explosion-proof variants
- Installation & Commissioning: On-site support and training services
Get Accurate Square Duct Type Fan Price Quote
For the most accurate pricing on Square Duct Type Fan, we recommend contacting our sales team with your specific requirements. We provide detailed quotations with:
- Competitive market rates guaranteed
- Detailed cost breakdown included
- Quick response within 2-4 hours
- Technical consultation at no extra cost
Frequently Asked Questions
Common Questions About Square Duct Type Fan
Find answers to the most common questions asked by our clients.
Square duct fans are axial flow fans designed for square/rectangular ductwork rather than round ducts. Design: Square housing with flanges matching standard square duct dimensions, internal axial impeller, direct-drive or belt-driven depending on size. Applications: Commercial kitchen exhaust systems (standard square duct), HVAC systems using rectangular ductwork, industrial process ventilation with rectangular duct runs, paint booth supply/exhaust (square plenum connections), laboratory fume hood systems. Advantage over round: Easier integration with building architecture (fits in ceiling/wall spaces better), matches existing square ductwork common in commercial buildings, simpler transitions to diffusers/grilles. Disadvantage: Slightly lower efficiency than round equivalent (corner turbulence), 10-15% higher cost than round fans.
Square duct fans match standard duct dimensions: Small (300×300 to 450×450mm): 1,500-8,000 CFM, commercial kitchen exhaust, small HVAC applications. Medium (450×450 to 750×750mm): 8,000-25,000 CFM, larger commercial kitchens, industrial process exhaust, paint booth systems. Large (750×750 to 1200×1200mm): 25,000-80,000 CFM, industrial ventilation, large commercial HVAC, warehouse exhaust. Custom rectangular: Non-square dimensions available (e.g., 600×900mm) to match specific duct layouts. Pressure range: Typically 25-150 mmWC depending on impeller design - suitable for systems with moderate duct resistance. Selection note: Fan size must match existing duct dimensions exactly - transitioning square to round requires additional transition pieces adding cost and pressure loss.
Square Duct Fans: Match commercial building ductwork (HVAC), easier architectural integration, simpler connection to square plenums/hoods, lower efficiency (turbulence in corners), 10-20% higher cost. Round Inline Fans: Higher efficiency (smooth airflow), lower cost, industry-standard sizes, requires transitions if connected to square ductwork. Choose square when: Existing ductwork is square (commercial kitchens, many HVAC systems), space constraints favor rectangular shape, connecting to square hoods or plenums. Choose round when: New installation (select most efficient option), industrial applications (round duct standard), cost is primary concern, optimizing efficiency critical. Performance: Round fans achieve 5-10% higher efficiency for same CFM/pressure duty. Practical reality: Most commercial buildings have square/rectangular ductwork - matching fan to existing duct avoids transition losses and installation complexity.
Standard square duct fans are NOT suitable for grease-laden exhaust directly from cooking equipment. Grease buildup issues: Impeller blades accumulate grease, creating imbalance and fire hazard. Motor cooling affected by grease coating. Bearing failure from grease contamination. Code compliance: Most fire codes require grease duct fans to be external (outside building) or special UL-listed grease-rated fans. Proper kitchen configuration: Use square duct fan for general kitchen ventilation (dining area exhaust, makeup air supply). For hood exhaust: Use external roof-mounted upblast centrifugal fans rated for grease service. Alternative: Special grease-rated inline fans exist (SS construction, sealed motors, sloped drain, UL-762 listed) but cost 3-4× standard fans. Critical: Consult fire codes and professional kitchen ventilation designer - incorrect fan selection in grease ductwork is fire safety violation and insurance liability.
Maintenance similar to other inline fans: Monthly: Visual inspection through access panel, check motor current, verify no unusual vibration or noise, clean inlet screens if equipped. Quarterly: Grease bearings if fittings present (2-3 grease gun pumps), inspect belts for wear if belt-driven (most are direct-drive), measure vibration levels (should be <4.5 mm/sec). Semi-annually: Blade cleaning - dust/dirt accumulation reduces efficiency 10-20% and creates vibration. Access usually requires duct disconnection at flanges. Motor insulation test (megger). Annually: Bearing replacement for 24/7 continuous operations, complete impeller inspection for damage/cracks, motor winding resistance check, flexible connector inspection. Square duct considerations: Corner areas trap more dust than round - may need more frequent cleaning in dusty environments. Inspect gaskets at flange connections for air leakage. Predicted lifespan: Motor 10-15 years, bearings 5-8 years (with proper maintenance), impeller 15-20 years, housing 20+ years.
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