# NEPTONION 20 x 12 x 14 in Double-Door Glass Terrarium

Source: https://www.ranked10.co.uk/pet-supplies/best-reptile-vivariums/neptonion-20x12x14-glass-terrarium
Ranked #10 in "Best Reptile Vivarium 2026: 10 Ranked, and the Tank Volume Fields That Don't Add Up": https://www.ranked10.co.uk/pet-supplies/best-reptile-vivariums

- Price: £99.99 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 4.3 from 287 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0G4GMW85T?tag=ranked10-21

The NEPTONION Terr-PT is the tenth entry in this guide: a 20 x 12 x 14 inch glass terrarium with double front doors, a lock, a cable port and a waterproof deep base below the doors, listed at £99.99 with 4.3 out of 5 from 287 ratings. It is a terrestrial vivarium for small species, and the listing names sandfish skinks as an example of what it is built for.

Where most listings in this guide print a capacity figure that has nothing to do with the box, this one holds up. The name says 20 x 12 x 14 inches, the dimensions field says 50.8 x 30.5 x 35.6 cm, and those are the same three numbers. 20 x 12 x 14 inches is 3,360 cubic inches, or roughly 14.5 US gallons, and the Tank Volume field reads 14.6 gallons — the closest match in the guide. The contradiction sits somewhere else. The same page calls the product a 'Reptile Terrarium Starter Set (4 Items)' and lists a rattan strip, a gold thread leaf and a conch leaf under Included Components, while Number of Items reads 1 and the first bullet states 'Sold as an empty tank only; decor and accessories are not included'. The warranty figures disagree too: the bullet promises 18 months of 'golden service', the Product Warranty field reads 1. Every figure on this page comes from the Amazon listing, not from any testing of ours.

## Specification

| Field | Value |
|---|---|
| Price | £99.99 |
| Rating | 4.3 out of 5, from 287 ratings |
| Item dimensions | 50.8 x 30.5 x 35.6 cm (the 20 x 12 x 14 inches in the name) |
| Tank volume | 14.6 gallons |
| Set name (as listed) | Reptile Terrarium Starter Set (4 Items) |
| Included components (as listed) | Rattan strip, Gold thread leaf, Conch leaf |
| Number of items (as listed) | 1 |
| Product warranty (as listed) | 1, against the 18 months of 'golden service' in the first bullet |

## Questions people ask

**How big is the NEPTONION Terr-PT?**

The item dimensions field gives 50.8 x 30.5 x 35.6 cm, which is the 20 x 12 x 14 inches stated in the product name.

**Does the 14.6 gallon tank volume match the size in the name?**

It does. 20 x 12 x 14 inches is 3,360 cubic inches, and 3,360 divided by 231 is about 14.5 US gallons, so the Tank Volume field agrees with the dimensions rather than contradicting them.

**Is decor included with the NEPTONION Terr-PT?**

The listing says both things. The Set Name reads 'Reptile Terrarium Starter Set (4 Items)' and Included Components lists a rattan strip, a gold thread leaf and a conch leaf, but the first bullet says 'Sold as an empty tank only; decor and accessories are not included', and Number of Items reads 1. The page does not resolve which is correct.

**Does it arrive assembled?**

The first bullet says no assembly is needed and the tank is ready out of the box once unpacked.

**What reptiles is the NEPTONION Terr-PT intended for?**

The product name describes it as a terrestrial vivarium for small desert reptiles such as sandfish skinks, and Vivarium Type is given as Terrarium with Pet Type listed as Reptile.

**How long is the warranty on the NEPTONION Terr-PT?**

Two different answers appear on the same page. The Product Warranty field reads 1, while the first bullet offers '18 months of golden service'.