The Middleby Marshall LongWave LW33 Series is an advanced infrared single conveyor oven designed for high-volume commercial kitchens. With powerful top and bottom infrared elements, it ensures rapid and uniform heat transfer, delivering consistently high-quality results. This versatile oven can replace multiple pieces of equipment - such as chargrills, salamanders, broilers, and flat tops - by handling baking, roasting, broiling, searing, and more. Designed with automation, precision controls, and stackable configurations, the LW33 reduces labor, increases efficiency, and supports scalable kitchen operations.
Features (Standard)
- Top & bottom infrared heating elements for faster, uniform cooking
- 18-gauge stainless steel exterior, fully insulated
- Four independent infrared controls for precise cooking flexibility
- Cool Skin technology keeps exterior safe to touch
- Quiet operation for reduced kitchen noise
- Independent microprocessor control with time/date clock & self-cleaning cycle
- Up to 15 programmable presets for time and temperature combinations
- Stackable design (up to three ovens high) for space efficiency
- Split-belt conveyor option with independently adjustable speeds
- 5” extension trays included
- Two-year parts and labor warranty (includes U.S. start-up/demo)
- Designed for installation under a ventilation hood
Specifications
LW33-1 (Single Unit)
- Heating Zone: 31.22” (793 mm)
- Baking Area: 3.9 ft² (0.36 m²)
- Overall Length: 59” (1499 mm)
- Conveyor Width: 22.58” (574 mm)
- Belt Width (Single): 18” (457 mm)
- Belt Width (Split 50/50): 9” + 9” (229 mm each)
- Height with 15” legs: 39.53” (1004 mm)
- Depth: 40.35” (1025 mm)
- Crated Weight: 599 lbs (272 kg)
- Bake Temp Range: 300°F – 1200°F (149°C – 649°C)
- Time Range: 1–17 minutes


- Model Number:
- LW33-1
- Dimensions:
- 59x39.53x40.35
- Power Type:
- Electric
- Unit:
- Single
- Heating Zone:
- 31.22"
- Baking Area:
- 3.9 ft²
- Conveyor Width:
- 22.58”
- Time Range:
- 1-17 minutes
- Certifications:
- cETLus Listed, ETL-Sanitation, CE
- Installation Type:
- Floor Model
For complete product specifications and to download the file, please click below.

