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DUCTWORK
Choose one of our DUCTWORK from the categories below:
Factory Built Grease Duct Systems. UL listed, requires No Welding - Single Wall & Reduced Clearance: UL1978 and
Double Wall Zero Clearance: UL1978 & UL2221, Limited Lifetime Warranty.
NAKS Grease Duct Product Offering
| Products | Inner Diameter (ID) | Outside Diameter (OD) | Clearance To Combustibles | Clearance To Non- Combustibles | Total Footprint |
|---|---|---|---|---|---|
| Single Wall | 10 - 22" | ID | 18" | 0" | OD+Clearance |
| Double Wall Reduced Clearance | 10"-14" | ID+2.5 | 2" | 0" | OD+Clearance |
| Double Wall Reduced Clearance | 16"-22" | ID+2.5 | 3" | 0" | OD+Clearance |
| Double Wall Zero Clearance | 10"-22" | ID+6.5 | 0" | 0" | OD+Clearance |
| 200 CFM/foot Medium Duty | |||
|---|---|---|---|
| Hood Length (ft.) | 200 CFMS Linear FT. | Ductwork Dia. | Hood Conn. Dia. |
| 3'-0" to 5'-5" | 600-1075 | 10 | 10 |
| 5'-6" to 7'-5" | 1100-1475 | 12 | 12 |
| 7'-6" to 9'-11" | 1500-1975 | 14 | 14 |
| 10'-0" to 10'-11" | 2000-2100 | 16 | 10(2) |
| 11'-0" to 15'-5" | 2200-3175 | 18 | 12(2) |
| 15'-6" to 20'-0" | 3100-4000 | 20 | 14(2) |
| 250 CFM/foot Heavy Duty | |||
|---|---|---|---|
| Hood Length (ft). | 250 CFMS/ Linear FT. | Ductwork Dia. | Hood Conn. Dia. |
| 3'-0" to 4'-5" | 750-1125 | 10 | 10 |
| 4'-6" to 5'-11" | 1150-1475 | 12 | 12 |
| 6'-0" to 7'-11" | 1500-1975 | 14 | 14 |
| 8'-0" to 9'-11" | 2000-2475 | 16 | 10(2) |
| 10'-0" to 11'-11" | 2500-2975 | 18 | 12(2) |
| 12'-0" to 15'-5" | 3000-3850 | 20 | 14(2) |
| 15'-6" to 20'-0" | 3875-5000 | 22 | 16(2) |
Please refer to the Duct Diameter sizing chart by Hood Size and CFMS.
State of the art Stainless Steel grease duct systems are NFPA-96 compliant, designed to safely convey grease laden vapors from commercial kitchen cooking equipment. Combining industry leading performance with ease of installation, NAKS factory-built grease duct systems incorporate a steel to steel overlapping conical joint which requires no field welding. This joint design critically protects the seal surface and withstands high pressure washings. Double wall and large diameter single wall options incorporate flanged connections and clamp bands for maximum rigidity. Innovative accessories including cutable lengths, built in access doors on offsets, and no weld hood adapters all combine to make this your best ducting option.
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