Imperial (Middleby) Gas Ranges - ISPA-18
(Middleby Essentials • QUICK SHIP – Leaves Warehouse in 1-2 Days)
Built for high-volume kitchens that need big heat in a small footprint, the Imperial ISPA-18 delivers a powerful 90,000 BTU punch from a single, 3-ring cast-iron burner. Stainless steel construction, removable drip pan and an open front cabinet make it a rugged, easy-to-clean workhorse that’s ready to ship when you are.
Features
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90,000 BTU (26 kW) 3-ring burner handles everything from a slow simmer to rapid boiling.
- Two independent gas valves let you fine-tune the inner and outer rings separately for maximum control and fuel savings.
- Reinforced, removable cast-iron top grate with rolled front edge for easier loading of heavy stock pots.
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Manual, restaurant-grade controls with continuous pilot for instant ignition.
- Full-width, slide-out stainless steel drip pan speeds daily cleanup.
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Open front cabinet provides convenient storage for utensils, pans or cleaning supplies.
- Durable stainless steel front & sides with welded seams stand up to years of commercial abuse.
- 6" heavy-duty legs with adjustable feet for quick leveling on uneven floors.
Specifications
| Model |
ISPA-18 |
| Overall Dimensions (W × D × H) |
18" × 21" × 24-3/4" (457 × 533 × 629 mm) |
| Number of Burners |
1 (3-ring cast iron) |
| Total Output |
90,000 BTU / 26 kW |
| Gas Type |
Natural or Propane (field convertible) |
| Manifold Pressure |
5" W.C. Natural • 10" W.C. LP |
| Gas Connection |
3/4" NPT (rear) |
| Shipping Weight |
125 lb / 57 kg |
| Clearances |
0" rear & sides (non-combustible) • 6" side (combustible) |
What our Experts Think
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Compact high-output stock pot performance
The ISPA-18 is a space-saving 18” gas stock pot range designed for fast, high-volume boiling, simmering, and heavy-duty cooking in commercial kitchens.
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Powerful 90,000 BTU 3-ring burner
Delivers intense, concentrated heat with a single cast-iron 3-ring burner, allowing rapid temperature response from gentle simmer to full boil.
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Precision heat control for professional use
Dual valve system lets operators independently control inner and outer flame rings for better efficiency, fuel control, and cooking precision.
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Built for demanding commercial environments
Stainless steel front and sides with welded seams ensure long-term durability, corrosion resistance, and easy cleaning under heavy use.
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Operator-friendly workflow design
Includes a full-width drip pan, open storage base, and removable cast-iron grate, making cleanup faster and daily operation more efficient.
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Stable and installation-ready construction
Heavy-duty adjustable legs provide solid leveling and stability, even on uneven kitchen floors.
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Certified for commercial safety standards
NSF and ETL sanitation certifications ensure compliance with professional foodservice hygiene and safety requirements.
Q&A
Q: What is the Imperial ISPA-18 gas range used for?
A: The ISPA-18 is a commercial gas stock pot range designed for high-volume cooking such as soups, stocks, sauces, and boiling large quantities in restaurants and industrial kitchens.
Q: What are the key features of the ISPA-18?
A: It features a single high-output 3-ring burner, cast iron grate, stainless steel construction, and open storage base, built for durability and heavy-duty kitchen use.
Q: How powerful is the Imperial ISPA-18?
A: It delivers 90,000 BTU total output, providing strong heat for rapid boiling and consistent high-performance cooking.
Q: What type of burner does it use?
A: It uses a 3-ring cast iron burner with dual adjustable gas valves, allowing independent control of inner and outer flame rings for precise heat adjustment.
Q: What are the dimensions of the ISPA-18?
A: The unit is approximately 18” W x 21” D x 24.75” H, making it a compact but powerful addition to a cookline.
Q: What materials is the ISPA-18 made from?
A: It is built with heavy-duty stainless steel front and sides, designed for durability, corrosion resistance, and easy cleaning.
Q: Does the ISPA-18 provide storage space?
A: Yes, it includes an open front cabinet base, useful for storing pots, utensils, and kitchen tools.
Q: Is the ISPA-18 suitable for commercial kitchens?
A: Yes, it is designed for restaurant-grade performance, certified for sanitation and safety standards used in professional foodservice environments.
Q: Why choose the Imperial ISPA-18?
A: It combines high BTU power, compact size, and heavy-duty construction, making it ideal for kitchens that need reliable, high-output cooking in limited space.
Maintenance Tips
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Daily stainless cleaning: Wipe exterior panels with warm water and mild detergent to remove grease and food spills, maintaining hygiene and corrosion resistance.
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Clean burners regularly: Lift and clean cast iron burners to prevent clogging and ensure even flame distribution for consistent cooking performance.
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Check pilot & ignition system: Ensure standing pilots ignite properly for reliable start-up and safe operation during peak service.
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Clear crumb tray daily: Remove and wash crumb tray to prevent grease buildup and reduce fire risk in high-heat environments.
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Avoid abrasive cleaners: Do not use steel wool or harsh chemicals—protects stainless steel finish and welded seams.
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Inspect gas connections: Regularly check for leaks, wear, or loose fittings to maintain safe gas flow and compliance.
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Level the unit: Adjust heavy-duty legs to ensure stability and even cooking performance across all burners.
Damage 
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