When choosing a Mont Alpi outdoor kitchen, the primary decision comes down to the core engine of your setup: the Mont Alpi 400 Series versus the Mont Alpi 805 Series.
While both series share Mont Alpi's marine-grade 304 stainless steel construction, granite countertops, heavy-duty rotisserie kits, internal halogen lighting, and safety-glow LED control knobs, they differ in grill footprint, heat capacity, and overall cooking area.
The main difference between the Mont Alpi 400 and 805 is size and total heat output. The Mont Alpi 400 is a 32” grill module with 4 main burners pushing 63,000 BTUs across a 28” x 18” cooking surface. The Mont Alpi 805 is a larger 44” grill module with 6 main burners pushing 87,000 BTUs across a 38” x 18” cooking surface.
Here is a side-by-side comparison breakdown to help you determine which size fits your patio and hosting needs.
Mont Alpi 400 vs. 805 Specs Comparison
| Feature / Specification | Mont Alpi 400 Series | Mont Alpi 805 Series |
| Number of Main Burners | 4 Stainless Steel Tube Burners | 6 Stainless Steel Tube Burners |
| Grill Head Width | 32 inches | 44 inches |
| Grill Cooking Surface | 28” x 18” (504 sq. in. main) | 38” x 18” (684 sq. in. main) |
| Grill BTU Output | 63,000 BTUs | 87,000 BTUs |
| Total BTUs (With Side Burner) | 78,000 BTUs | 115,000 BTUs |
| Infrared Rear Burner | Yes (Ceramic) | Yes (Ceramic) |
| Rotisserie Kit | Included (Motor + Rod) | Included (Motor + Rod) |
| Infrared Side Burner | Included in full suites | Included in full suites |
| Overall Island Length (Base 3-Piece) | ~120 inches (~10 ft) | ~94 inches (without side modules) / expands with options |
| Fuel Compatibility | Propane (LP) or Natural Gas (NG) | Propane (LP) or Natural Gas (NG) |
Detailed Breakdown: Core Differences
1. Cooking Surface & Capacity
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Mont Alpi 400: Offers 504 square inches of primary grilling space. This comfortably fits 20 to 24 standard burgers at once—ideal for weeknight family dinners or entertaining groups of 4 to 8 people.
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Mont Alpi 805: Expands your primary cooking area to 684 square inches. With room for 30+ burgers simultaneously, the 805 accommodates multi-zone heat setups (sear zone, low-temp roasting, and warming space operating at the same time).
2. Multi-Zone Temperature Management
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Mont Alpi 400: Features 4 individual control knobs. You can easily set up 2-zone indirect grilling (heat on one side, food on the other).
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Mont Alpi 805: With 6 main burners, you gain true 3-zone heat control. You can sear steaks on high heat over the left burners, roast vegetables over medium heat in the middle, and keep finished items warm on low heat over the right burners without overcrowding.
3. Footprint & Patio Space
Both models share the same depth (23” body / 27” total) and height, meaning both sit comfortably on standard decks and stone patios. However, the 805 island module adds 12 extra inches of overall width. If your patio layout has strict spatial boundaries, measure your overall run clearance carefully when factoring in optional refrigeration or side cabinets.
What Comes Standard on BOTH Series?
Whether you select a 400 or an 805, Mont Alpi equips both series with premium standard features:
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Heavy-Duty 304 Stainless Steel Construction: High corrosion resistance designed for year-round outdoor exposure.
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8mm Stainless Steel Rod Grates: Thick, heavy-gauge cooking grids that deliver heat retention and sear lines.
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Infrared Rear Burner & Motorized Rotisserie Kit: Built-in rear radiant heat source for spit-roasting meats.
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Nighttime Lighting: Dual internal halogen hood lights paired with LED control knobs that change color (Blue = Off / Red = Gas On).
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Infrared Side Burner Station: High-heat ceramic side burner for high-temp searing or boiling pots.
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Modular Expansion: Compatible with Mont Alpi refrigerators, beverage centers, sinks, corner pieces, and additional storage cabinets.
Which Model Should You Choose?
Choose the Mont Alpi 400 if:
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You are cooking primarily for small-to-medium families (4 to 8 people).
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You have patio width constraints and need a slightly more compact modular footprint.
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You want high-end 304 stainless steel performance and complete modular expansion (sinks, fridges) at a lower overall price point.
Choose the Mont Alpi 805 if:
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You frequently host large parties, neighborhood cookouts, or holiday gatherings.
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You want maximum thermal power (87,000+ BTUs) and expansive surface area to cook multiple dishes simultaneously.
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You want seamless 3-zone temperature control across a wide 44” cooktop.
Frequently Asked Questions
Can I upgrade a 400 Series island to an 805 grill head later?
No. Because the cutout width of the central grill cabinet differs (32” for the 400 vs. 44” for the 805), the main grill base cabinet is size-specific. You must select your preferred grill size at the time of initial purchase. However, all side modules (fridges, sinks, drawers, corners) are interchangeable across both series.
Do both models come in Original, Deluxe, and Black Series finishes?
Yes. Both the 400 and 805 grill engines are available across Mont Alpi's core finish lines, including Original Stainless, Deluxe (featuring waterfall granite sides), and Black Stainless.