1-Cell Fabric Innerduct — Flexible Textile Pathway for Single-Fiber OSP & Retrofit
1-Cell Fabric Innerduct — Flexible Textile Pathway for Single-Fiber OSP & Retrofit
Description: Single-fiber drops don't need three empty cells — they need one clean, lightweight pathway that goes in fast and stays out of the way. The 1-Cell Fabric Innerduct is the lightest member of the family: a fold-flat split tube that opens around a single cable, recovering conduit space and cutting pull tension without new trenching. Its woven PET + Nylon 6 construction folds flat for pulling, then conforms to the cable once installed — so wasted space in rigid innerduct becomes usable capacity. Each cell carries a pre-installed pull tape, and the fabric resists abrasion, moisture and UV, and is built for a long buried service life. Ideal for retrofits, small-scale expansion and single-cable runs where cost efficiency and speed matter most. Available in Standard, Riser, Plenum and Detectable versions. Tell us your conduit ID and we will confirm the right size for free.
Product Description
2. Bullet Points
One pre-installed pull-tape pathway for single-fiber and low-density OSP / ISP drops
Recovers the conduit space rigid innerduct wastes
Around 1.0 lb/ft — light enough to handle without lifting gear
Fold-flat PET + Nylon 6 construction — no bending memory, resists abrasion, moisture and UV
PET + Nylon 6 — heat resistant and dimensionally stable in buried duct
Built for a long buried service life
Available in Standard, Riser, Plenum and Detectable versions
Application ：
Single-fiber / low-density FTTH drops
OSP retrofit and small-scale expansion
Single-cable runs in existing conduit]
3. Specification:
|
Parameter |
Specification |
|
Cell Count |
1 |
|
Material |
PET + Nylon 6 |
|
Conduit ID |
1.25" (32 mm) nominal — 3212-1 |
|
Max cable diameter per cell |
10 / 12 / 14 / 18 / 22 / 28 / 38 mm （ 0.39 – 1.50 in ） |
|
Tensile strength |
304 – 760 kg （ 670 – 1,676 lbs ） categorized by wire |
|
Working temperature range |
−45 °C to 92 °C (−49 °F to 198 °F) |
|
Thermal expansion |
Significantly lower than HDPE |
|
Design life |
30–50 years (design target) |
|
Fill ratio |
Per project specification |
|
Pull tape |
Pre-installed high-strength pull cord, 8 mm wide |
|
Reel length |
2000 m / 6,560 ft (standard wood roll, cuttable) |
|
Weight/ft |
~1.0 lbs/ft （ ≈ 1.5 kg/m ） |
4.Fabric Innerduct vs HDPE Subduct vs Rigid Innerduct
|
Metric |
Fabric Innerduct |
HDPE Subduct |
Rigid Innerduct |
|
Thermal expansion |
Significantly lower |
baseline |
— |
|
Design life |
Long-term buried service |
~15 Years |
— |
|
Fill ratio |
Higher |
Lower |
waste tube space |
|
Bending memory |
None (foldable and flush) |
will curl; |
fixed shape |
|
Pull tape |
Pre-set for each chamber; color separation for 2 or more chambers |
separately equipped |
separately equipped |
|
Install speed |
Faster (project-dependent) |
Benchmark |
Benchmark |
5.
Size chart
|
Model |
Recommended Cable OD (mm) |
Cell Circumference (mm) |
Cell Inner Dia. (mm) |
Overall Width A (mm) |
Seam Width B (mm) |
Fold Width C (mm) |
|
TFI-38-x |
38 |
163 |
52 |
86 |
4 |
6 |
|
TFI-28-x |
28 |
121 |
38 |
64 |
4 |
6 |
|
TFI-24-x |
24 |
103 |
33 |
55 |
4 |
6 |
|
TFI-22-x |
22 |
97 |
31 |
52 |
4 |
6 |
|
TFI-18-x |
18 |
81 |
26 |
44 |
4 |
6 |
|
TFI-14-x |
14 |
65 |
21 |
36 |
4 |
6 |
|
TFI-12-x |
12 |
56 |
18 |
32 |
4 |
6 |
|
TFI-10-x |
10 |
49 |
15 |
28 |
4 |
6 |
6.Tensile Strength Reference Table （ -1/-2/-3 = 1/2/3 cell ）
|
Single Cell diameter |
1 Cell |
2 Cell |
3 Cell |
|
38mm |
>760 kg (1,676 lbs) |
>1440 kg (3,175 lbs) |
>2120 kg (4,674 lbs) |
|
28mm |
>592 kg (1,305 lbs) |
>1104 kg (2,434 lbs) |
>1616 kg (3,563 lbs) |
|
22mm |
>496 kg (1,094 lbs) |
>900 kg (1,984 lbs) |
>1300 kg (2,866 lbs) |
|
18mm |
>432 kg (952 lbs) |
>784 kg (1,728 lbs) |
>1136 kg (2,504 lbs) |
|
14mm |
>368 kg (811 lbs) |
>650 kg (1,433 lbs) |
>940 kg (2,072 lbs) |
|
12mm |
>332 kg (732 lbs) |
>584 kg (1,287 lbs) |
>836 kg (1,843 lbs) |
|
10mm |
>304 kg (670 lbs) |
>528 kg (1,164 lbs) |
>752 kg (1,658 lbs) |
7. FAQ
Q1. Are you a manufacturer or a distributor?
We are a fabric innerduct manufacturer, specializing in 1, 2, 3 and 4 cell configurations. OEM, private-label and custom printing are available.
Q2. How do I choose between 1, 2, 3 and 4 cells?
Start with the number of independent routes you need, then check the conduit ID and any existing cable. Send us the four project details below and we will recommend the right configuration within one working day.
Q3. Can it be installed in a conduit that already contains cable?
Yes, where sufficient usable space and a suitable pulling route remain. Send the conduit ID, the number of existing cables, and route length / bends for an initial fit check.
Q4. What is the tensile strength?
Tensile strength is rated by the cell diameter — see the tensile table below. Over 2,120 kg for 3-cell at 38 mm OD. For 4-cell, ask for the spec sheet (rated ≥ the same-OD 3-cell value).
Q5. Can I get a free sample?
Yes — free samples are in stock for fit and pulling evaluation. Provide your DHL / FedEx / TNT / UPS account, or we charge a small shipping fee.
Q6. Can you print my brand or custom marking?
Yes. Example marking: Fabric Innerduct TFI24-3 1888M 25-19 Max 24mm. We support custom meter marking, color-coded pull tape, reel length and packaging.
Q7. What are the delivery time and payment terms?
Delivery depends on order quantity — typically 3–7 business days for small orders and 11–14 days for a 40 ft container. Payment by T/T in advance; PayPal accepted for small orders.