01 / Stage 01
Stainless grease baffle.
A tool-free AISI-304 baffle slows and cools the extracted air, condensing grease into a captured cup. Dishwasher-safe every service, zero consumable cost.
Keystonne Air™ · The flagship
Cook anywhere.
Vent nowhere.
A self-contained, UL 710B-certified hood that returns kitchen air to the room cleaner than it arrived. Four stages of filtration — baffle, pre-filter, HEPA H13, activated carbon — and a cooking floor that is no longer bound to a roof.
KEYSTONNE / ENGINEERED AS ONEFlagship
- 4-stage filtration to HEPA H13
- 850 CFM · 42 dBA average
- UL 710B · NFPA 96 · Type-1
- ANSUL fire-suppression ready
- Fits through a 36" doorway
Keystonne Air™ · Ventless extraction
Cook anywhere. Vent nowhere.
A self-contained hood that returns the air cleaner than it arrived.
Why Keystonne Air
Every commercial kitchen built in the last century has started with the same question: where does the duct go? Heritage buildings, basements, malls, cruise ships, airports, penthouses — vast footprints of unusable space, locked out of foodservice because of a single invisible constraint. Keystonne Air ends that constraint. The four-stage bank inside the hood finishes the work the air needs, and the cooking line finally follows the customer.
Inside Keystonne Air
Four stages.
One quiet pass.
02 / Stage 02
Fibreglass pre-filter.
A honeycomb fibreglass mat traps micro-droplets that survive the baffle. Protects the downstream HEPA from premature loading — tripling its service life.
03 / Stage 03
HEPA H13.
True HEPA H13 media removes 99.95 % of airborne particles down to 0.3 µm — the same grade used in operating theatres and semiconductor cleanrooms. Smoke particles, fine aerosols, sub-micron carbonised cooking oil.
04 / Stage 04
Activated carbon.
A pelletised coconut-shell charcoal bed scrubs odours, VOCs and the organic compounds HEPA can't catch. The air that re-enters your kitchen is cleaner than the room it came from.
Specifications
A small footprint.
An enormous capability.
0850 CFM
Airflow capacity
042 dBA
Noise, average
0100 %
HEPA @ 0.3 µm
04
Filtration stages
0240 V
Single-phase
036"
Door clearance
0150 CFM
Makeup-air min.
02 yr
Parts warranty
Applications
Everywhere a duct
never made it.
Use-case
Heritage buildings
Where roof penetration or ducted chases are forbidden.
Use-case
Basement kitchens
Dead-space retail and hotel basements become cooking floors.
Use-case
Cruise & marine
No external venting available; every gram of duct weight matters.
Use-case
Shopping malls
Drop a kitchen into any tenant bay without base-building duct work.
Use-case
Mobile & pop-up
Wheeled, 208/240V single-phase, running on a 20-minute install.
Use-case
Luxury residences
Chef's kitchens in penthouses where extraction shafts don't exist.
Use-case
Corporate floors
Live-cooking stations on any office floor; no BMS integration required.
Use-case
Airports & transit
Tenant cooking bays without base-building fume-duct capacity.
Safety
The hood watches
the kitchen.
Keystonne Air is interlocked with the cooking equipment it serves. If a filter is missing, clogged or saturated — the equipment will not energise. If a thermal event is detected — ANSUL engages and the cooking line cuts out.
Airflow sensors
Continuously monitored. Early-warning LED flags filter replacement before performance drops.
Filter-status interlock
Cooking equipment disables if a filter is missing or saturated — mandatory under UL 710B.
ANSUL fire-suppression
Self-contained ANSUL bay. Manual fire-pull. Full Chapter 13 NFPA 96 compliance.
Thermal interlock
On activation, the cooking circuit is interrupted at the appliance — no human action required.
Compliance
Certified,
not claimed.
UL 710B
Recirculation hood certification
NFPA 96
Chapter 13 · life-safety compliant
Type-1 hood
Grease-bearing vapour rated
EPA 202
Emissions below NFPA threshold
HEPA H13
99.95 % at 0.3 µm
ANSUL-ready
Integrated fire-suppression bay
Compatibility
Electric. Enclosed.
Forward-facing.
Keystonne Air is engineered for electrically heated, enclosed, forward-facing cooking compartments. Every compatible appliance is controlled through the Keystonne Air shut-off interface.
Electric convection ovens (single & double deck)
Combi ovens (electric)
Conventional ovens (electric)
Cook & hold ovens
Steamers (electric)
Oven-proofer combinations
Pizza deck ovens (electric)
Rotisserie (enclosed electric)
One more thing
A commercial kitchen
with no architectural veto.
Keystonne Air is the flagship of Keystonne Extraction — our bet on the next decade of commercial foodservice, where cooking floors no longer answer to the shape of the building above them.
A study in materials. A focus on service.Your next great kitchen starts here.
A conversation with an engineer.
A kitchen built around your ambition.