Underground Humid Hide Tunnel Add-Ons – Replacement & Expansion Tubes

Expand and customize your reptile’s underground world with these Modular Tunnel Add-Ons, designed to connect seamlessly to our Underground Humid Hide system.

These tunnels allow you to create natural, underground pathways that lead from beneath the substrate up to the enclosure surface — perfect for bioactive setups, enrichment-focused enclosures, and reptiles that love to explore.

🧩 What This Listing Is For

This listing is for tunnel pieces only.
➡️ The underground hide itself is sold separately here: https://reptile-studio.audhdly.com/products/underground-humid-hide

Use these add-on tunnels to:

• Extend existing underground paths
• Add new exits to the surface
• Create multi-directional or looping tunnel systems
• Adapt layouts as your enclosure grows or changes

🛤️ Available Tunnel Styles

Choose from three modular tunnel types:

• Straight Tube – Ideal for direct underground runs
• Elbow Tube (90°) – Perfect for corner turns and compact layouts
• Curved Tube – Designed to rise smoothly up to the substrate surface

All tunnels are designed to connect cleanly and securely to compatible hide entrances and to each other.

📏 Size Compatibility

Tunnel sizes are matched to the hide size you select. Please choose the same size as your existing hide to ensure a proper fit.

🔸 Small

• Straight: 3in L × 2.5in diameter (76.2mm × 63.5mm)
• Curved: 5.64in L × 2.5in diameter (143.3mm × 63.5mm)
• Elbow: 3.67in L × 2.5in diameter (93.3mm × 63.5mm)

🔸 Medium

• Straight: 4in L × 2.92in diameter (101.6mm × 74.2mm)
• Curved: 6.93in L × 2.92in diameter (175.9mm × 74.2mm)
• Elbow: 5.07in L × 2.92in diameter (128.7mm × 74.2mm)

🔸 Large

• Straight: 5in L × 3.42in diameter (127mm × 86.9mm)
• Curved: 8.5in L × 3.42in diameter (215.8mm × 86.9mm)
• Elbow: 6.5in L × 3.42in diameter (165.1mm × 86.9mm)

❗ Important Notes

• This listing does not include the hide
• Tunnels are intended for underground use beneath the substrate
• Always verify size compatibility before ordering
• Custom colors may vary slightly from what’s shown due to screen differences and filament batch variations

⚠️ 3D Printing Disclaimer

This item is individually 3D printed, making each piece truly one of a kind! While we work hard to produce clean, high-quality prints, minor surface variations such as faint lines or tiny bumps are a normal part of the 3D printing process.

We do our best to minimize or prevent these flaws through careful printing and post-processing, but because every print is unique, a completely flawless surface cannot be guaranteed. Thank you for understanding and appreciating the handmade nature of 3D printed art!