25Q3109 Sources Sought Attach 1 SPEC.docx

Ventilation Duct Statement of Work (SOW)

1. Flex Tube Thermoplastic Rubber – TR-FR Medium weight co-extruded thermoplastic rubber hose with a rigid external polypropylene helix.

1.1. Ultra smooth interior to maximize efficiency of airflow

1.2. Highly flexible

1.3. Tight bend radius without crimping

1.4. Crush resistant

1.5. Moisture resistant

1.6. Chemical resistant

1.7. Designed for applications with wide temperature ranges

1.8. Spiral co-extruded engineered construction

1.9. Helix must protect against wear

1.10. Fire Retardant (FR) (UL 94-V0 material compliance)

1.11. Temperature Range: -60F to 275F

1.12. Length: 24 feet

1.13. Inside Diameter: 4”

1.13.1. Approx. Weight: 0.6 lbs. /ft.

1.13.2. Wall Thickness 0.035”

1.13.3. CL Bend Radius: 5”

1.13.4. Compression Ratio: 2:1

1.13.5. Negative Pressure: 20 in. / hg,

1.13.6. Working Pressure: 12 PSI

1.14. Inside Diameter: 6”

1.14.1. Approx. Weight: 1 lbs. /ft.

1.14.2. Wall Thickness 0.035”

1.14.3. CL Bend Radius: 7”

1.14.4. Compression Ratio: 2:1

1.14.5. Negative Pressure: 16 in. / hg,

1.14.6. Working Pressure: 10 PSI

1.15. Inside Diameter: 8”

1.15.1. Approx. Weight: 1.5 lbs. /ft.

1.15.2. Wall Thickness 0.035”

1.15.3. CL Bend Radius: 9.75”

1.15.4. Compression Ratio: 2:1

1.15.5. Negative Pressure: 12 in. / hg,

1.15.6. Working Pressure: 8 PSI

1.16. Color: Based on application. See JML

1.17. ALL VENT DUCT MUST BE MARKED “TR-FR” AND SHALL BE PLACED EVERY FOOT (12"). FONT SIZE, LETTER STYLE AND INK COLOR NOT SPECIFIED, BUT MARKING SHALL BE PERMANENT AND CLEARLY LEGIBLE.

2. Blue – Fire Retardant 14” Flexible Hose Heavy weight PVC hose

2.1. Ultra smooth interior to maximize efficiency of airflow

2.2. Highly flexible

2.3. Tight bend radius without crimping

2.4. Helix must protect against wear (abrasion resistance)

2.5. Moisture resistant

2.6. Chemical resistant

2.7. Fire retardant (FR) (UL 94-V0 material compliance)

2.8. Inside Diameter: 14”

2.9. Approx. Weight: 2.9 lbs. /ft.

2.10. Wall Thickness 0.045”

2.11. CL Bend Radius: 14”

2.12. Compression Ratio: 2.5:1

2.13. Negative pressure:1.27 in. / hg.

2.14. Working Pressure: 6 PSI

2.15. Temperature Range: 20F to 160F

2.16. Color: Blue

2.17. Length: 25 feet

3. Insulated Flexible Ventilation Duct

3.1. Flexible insulated ducting, 20 IN diameter at 25 FT long per section.

3.2. Insulating R-Value: Minimum of R-4

3.3. Construction: Two single-ply PVC vinyl coated polyester fabric plies protecting an insulation barrier reinforced with a spring steel wire helix & external PVC wearstrip. Insulation composed of 1” Fiberglass in the core layer.

3.4. Individual single-ply PVC coated polyester fabric must be constructed with a minimum fabric weight of 8.5 oz.

3.4.1. Interior and exterior layers must meet fire resistance performance rating of UL-94

3.4.2. Constructed with sewn cuff containing integral wire rope locking rings to enable multiple duct sections to be connected in series without requiring additional couplers or fittings

3.5. Exterior and interior fabric color must be white.

3.6. Both inner and outer duct layers must be tested per UL-94 fire standards and must be classified to have a flame retardant rating of V-0.

3.7. Flex duct rated for positive pressure supply air applications with standard hard drawn wire helix reinforcement with an expanded pitch no greater than 6 inches

3.8. Duct working pressure (Positive): 24.9 IN/W.G.

3.9. Duct working pressure (Negative): -5.4 IN/W.G

3.10. The ducting must feature excellent UV stabilization; mold and mildew inhibitors; and be constructed for rigorous and continuous outdoor exposure in such a harsh environment.

3.11. Application temperature range: -20°F / +180°F

3.12. The fully-flexible (1-foot bend radius or less) and fully-compressible (5:1 ratio or better) ducting shall be transported to the site and staged/stored at the site in pallet-sized wire baskets.

3.13. The purchased duct must be new and not used or returned from a previous lease.

3.14. NOTES (INSULATED FLEXIBLE VENTILATION DUCT ONLY):

3.14.1. Ducting constructed with material colors of yellow or magenta is strictly prohibited.

3.14.2. The Vendor must perform a careful physical examination of the ducting just prior to shipment. A physical examination requires that each individual piece of ducting is fully-extended in order to perform an adequate visual check of the product. The ducting material shall: (i) not be torn, accept for the minor pin hole type penetrations near the end finish wire ring ducting ends for the insertion of security tie-wraps to be installed after ducting interlocking; (ii) not be damaged nor vandalized; (iii) be clean and free of debris; (iv) lack indication of chemicals, burns, cuts, or abrasion; (v) not exhibit signs of mildew, rot, nor vermin; (vi) not have permanent kinks in the wire-reinforcement helix; and especially (vii) not have damaged nor bent wire end rings for the ducting with the end finish for the ducting ends.

4. Aluminum Flexible Hose Assembly (4”, 6”, and 8” ID) Unlined with NO PACKING- interlocking flexible aluminum hose assembly

4.1. Manufactured thickness required to 0.019” - 0.020”

4.2. Unlocked and deburred end cuts

4.3. Length: 20ft

5. PACKAGING & DELIVERY REQUIREMENTS for all duct material

5.1. All duct material for delivery must utilize packaging methods and shipment methods that are conducive to movement by forklift, and should assume offload from ground level with no access to loading dock.

5.2. If duct material is boxed, with approximate box footprint of a standard pallet (ex: TR-FR or equal): multiple boxes may be packaged together, and material must be packaged for shipment in a way that can be easily lifted and moveable by forklift. Width of individual packaged unit should be approximately as wide as a standard pallet (not less than the distance between standard forks). Length of individual packaged unit should not exceed the approximate length of two (2) standard pallets. If all material in a single shipment is packaged in bundles that do not exceed the footprint of 2 standard pallets, then LTL (less than truckload) shipment may be sufficient.

5.3. If duct material is oblong, and exceeds the footprint of approximately 2 standard pallets (ex: aluminum): material must be packaged for shipment in a way that can be easily lifted and moveable by forklift. If any of the material for delivery exceeds the approximate footprint of two (2) standard pallets, shipment on a flatbed truck may be required, so material can be offloaded from the side.