SJ-FTTH-SK-2B Specifications
| Model | SJ-FTTH-SK-2B |
| Type | Sealed drop cable protection box |
| Dimension | 160 × 47.9 × 16 mm |
| Capacity | 1 SC/LC adapter + 2 fast connectors, or 1 fusion splice with sleeve |
| Cable entry | Both ends: 2 × 3 mm FTTH drop cable or 3 mm round cable |
| Sealing | Full-perimeter silicone rubber ring (dust- and moisture-resistant; no IP rating claimed) |
| Housing material | ABS + PC, white |
| Mounting | Screw-fixed, 150 mm hole spacing; or double-sided adhesive tape |
| Application | FTTH / FTTx, GPON ODN, humid indoor locations |
| Operating temperature | −40 °C to +70 °C |
Key Features
- Silicone-ring sealed for humid locations — the cover closes on a full-perimeter silicone rubber ring that keeps dust and moisture away from splices and connectors in basements, corridors and meter boxes.
- Protects the weakest point of the drop — fusion splice or field connector enclosed and strain-relieved, not taped to the wall.
- Fits real field configurations — 1 SC/LC adapter plus 2 fast connectors, or a single fusion splice with protection sleeve.
- Standard drop cable entry — both ends lead 2 × 3 mm drop cable or 3 mm round cable in and out.
- Two mounting options — screws at 150 mm hole spacing, or adhesive tape where drilling is not allowed.
- Same compact footprint as the standard SK-2W — 160 × 47.9 × 16 mm, easy to standardize across a project with mixed environments.
Where the SJ-FTTH-SK-2B Fits
- Humid and sheltered entry points — the transition from outdoor drop cable to indoor cabling at walls, eaves and meter boxes.
- Basements, corridors and risers — splice and connector protection where condensation or splashing is a risk.
- Fast-connector terminations in the field — house field fast connectors with sealing the connectors alone do not provide.
- Drop repair and extension — re-enclose repaired splices with a sealed box instead of tape.
For dry indoor locations, the standard SK-2W is the economical choice; for multi-core or aerial runs, see the SJ-FTTH-SK-6C.
Installation Notes
- Lay the finished splice or connectors into the base channel before closing; keep fiber bends above the minimum bend radius.
- Check the silicone ring sits evenly all around before closing the cover — a pinched or twisted ring breaks the seal.
- Route cables straight into the end entries; sharp side-bends at the entry reduce sealing performance.
- For adhesive mounting on painted or damp walls, clean and fully dry the surface first, or use the screw holes at 150 mm spacing.
Which Protection Box Do You Need?
| SK-2W | SK-2B (this model) | SK-6C | |
|---|---|---|---|
| Role | Standard, dry indoor | Sealed, humid indoor locations | 6-core splice protection, 1-in-1-out |
| Capacity | 1 SC adapter + 2 fast connectors | 1 SC/LC port | 6 splices, Ø8 mm cable ports |
| Size | 160 × 47.9 × 16 mm | 160 × 47.9 × 16 mm | 190 × 90.1 × 21.5 mm |
| Mounting | Wall, screws or adhesive | Wall, screws or adhesive | Wall or aerial hang |
Full range: Fiber Wall Socket category
