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Calix H20 roof box, gloss black, no. ATH20-GB

RRP: £560.00
Code: ATH20-GB

A Long Wide box of the highest quality, with a size, shape and internal fittings that optimise its load carrying space. It’s 200cm long x 94cm wide x 38cm high.

It’s a very handsome box and right up there for quality alongside the KAMEI Oyster, Atera Casar, Hapro Trivor and all INNO boxes.

We’ve sold hundreds of different roof boxes over the last 24 years, so can tell you with confidence that the Calix H20 (pronounced H 20, not H2O) is a real head-turner. We’re really pleased to have the opportunity to sell it, on account of its quality, its ease of use, and its styling.

The quality is right up there with the best boxes on the market. It’s KAMEI Oyster quality, INNO quality, Thule Vector quality, as is apparent from its weight, the ease of unlocking and locking, and the stiffness of the base when attached to the roof bars.

It’s 200cm long, designed to complement the shorter roof lengths of the latest estates, 4x4s and SUVs – it doesn’t hang out over the windscreen, and has a rear that is shaped to accommodate rear spoilers, complete with a recess for shark fin antennae.

You’ll see that the lid of the box picks up both side styling and front styling features. Styling the side and front profiles of a roof box so they look right is a really tricky task – many manufacturers still stick with the rounded look, others go for an aggressive cut off look, but the Calix H20 does something unique, and we think it really works well. Seen from the front, its styling lines mirror the side and bonnet styling lines that are typical of modern vehicles.

Calix boxes are made in Sweden, and the development work was mostly done with Volvos, not the BMW 5 series Touring used in these pictures. Even so, it looks really good on this car.

Other features and specifications:

  • External dimensions: 200cm long x 94cm wide x 38cm high
  • Weight: 22kg
  • Maximum load: 75kg
  • Dual side opening, with 3 optimally positioned locks on each side
  • Capacity: 430 litres. At 38cm high, the Calix H20 is lower than some Long Wide boxes, but it’s high enough to accommodate all the bulky test luggage we use. The space in the top of higher roof boxes increases the nominal capacity, but is not usually used at all
  • The handle on the lid makes the box easier to open and close; it's an additional styling feature in itself
  • The roof bar fittings are Calix’s Quick Grip 2.0. These fit around all the roof bars we sell. The Quick Grip 2.0 combines claw-style fittings with an exceptionally low profile. You fit these by sliding the claws together so they touch both sides of the roof bar, then use the knob to tighten them. There'll be an audible 'click' so you know when you've fastened then securely. They’re very neat, very satisfactory to use, very low profile
  • T-track adapters are available if needed, shown in the list below. Use these instead of the Quick Grip fittings - they'll allow you to push the box further back or forward, which can be important if there's a potential clash with a fully opened tailgate. T-track adapters also provide more flexibility in side to side positioning, because claw fittings should not be used in the area of the roof bar feet (claw fittings usually touch the feet before they are tight enough on the bars) so you may not be able to position the box just where you want it
  • City Crash tested.
  • Made from ABS plastic; the plastic and all other components are fully recyclable
  • 5 year guarantee

Calix roof boxes are made by Autoform AB, Sweden's specialist box manufacturer, part of the CalixKlippan group. The factory is in Malung, a small town about 350km north-west of Stockholm, in the Dalarna region of Sweden. They make a lot of roof boxes for car manufacturers as well as their own-branded range.

Do you need roof bars as well? If so, check out our amazing box and bars package deal which provides everything you need, including this box, and locking roof bars, all for a fixed price! Click here for more details.

Very few customers know much about the roof box market before they visit our site. We have a lot of information about the things to think about before buying, and the “real world usefulness" of various roof box features, but you’ll be buying sight unseen, and you probably won’t have used a roof box before, so there is inevitably some luck in getting a box that you’ll be happy with.

We want to remove the risks of buying these large and often expensive items, perhaps from brands which almost every other roof box retailer doesn’t stock, and so we have a unique “90 day Exchange Scheme” for roof boxes.

This allows you to use a roof box and, with the benefit of experience, to exchange it for a new one within 90 days of invoice date, only paying a contribution to our carriage costs. Most exchanges are from a shorter box to a longer one, or from a wider box to a narrower one.

These are the rules of the Exchange Scheme:

  • You are allowed one exchange only.
  • The original box must be in "as new" condition, subject only to fair wear and tear.
  • The replacement box must be a different model. Not just an alternative colour.
  • The replacement box must not be part of a package deal or be from our Bargains section.
  • Roof bars are never part of the Exchange Scheme.

This is how the Exchange Scheme works:

  • We charge in full for the replacement box, including carriage charges, and a charge for any packaging needed for the return of the original.
  • If you want us to collect the original box, there will be a £50 carriage charge (please note that regional surcharges may apply).
  • We arrange the collection, if requested.
  • When the original box arrives back here we refund you for the invoice value of the original box, but you won't get back more than the invoice value of the replacement box. In other words, if the replacement is cheaper than the original we won't be giving you "extra cash back".

Please note: we can only collect roof boxes from mainland UK.

Delivery charges and arrangements:

We charge a contribution towards delivery costs, depending on what you order, where you live, and how quickly you want the goods.

These are our standard charges; there are usually surcharges for all offshore destinations and some remote postcodes - for details please see our delivery information page.

Delivery of this item

Roof boxes
Express Delivery £ 19.50 1 to 2 working days
Standard Delivery £ 14.50 3 to 4 working days

Delivery of other items

Small items & Spare parts
Express delivery £ 6.95 1 to 2 working days
Standard delivery £ 4.95 3 to 4 working days
Standard sized items (Roof bars, bike carriers and most other items)
Express Delivery £ 9.50 1 to 2 working days
Standard Delivery £ 6.50 3 to 4 working days
Long wide roof boxes, Dropracks and Roof tents
Express Delivery £ 19.50 2 working days

Delivery times

Delivery times are calculated in working days (Monday to Friday, excluding Bank holidays).

Cut-off times for Express Delivery orders
Express Delivery orders placed before before the cut-off times shown below will usually be desptached on the date of order. Express Delivery orders placed after these cut-off times will be despatched the next working day.

Small and Standard Sized Items Order by 4pm for same day despatch
Roof Boxes, Dropracks and Roof Tents Order by 1pm for same day despatch

Delivery FAQs

When will my order arrive?
There are no deliveries on Saturdays, Sundays or Bank Holidays, except for postable items where Royal Mail has a Saturday delivery. Express Delivery orders placed on a Friday (before 1pm) should be delivered on the Monday or Tuesday, Express Delivery orders placed on a Saturday or Sunday should be delivered on the Tuesday or Wednesday. The arrangements for Very Heavy Items are different and are shown above.

What about Next Working Day delivery?
We have offered a reliable Next Working Day service for well over 20 years but, due to the pressure on the couriers caused by the coronavirus crisis and the huge increase in online shopping, we can no longer be confident about the delivery date, which is why we now call the service ‘Express delivery’. Most Express delivery orders will arrive on the next or second working day, but some will arrive on the second or third working day, or be split between these days. So-called “split deliveries” happen when the couriers do not have enough trailer space for everything that should be moved around the UK, so they will load what they can and leave the rest for the next trailer.

Is my delivery day guaranteed?
No retailer or courier company can ever "guarantee" a Next Working Day delivery. As well as split deliveries, all courier companies occasionally have the same transport problems as can happen to everyone else, including snow blocked roads, closed roads, traffic jams, mechanical breakdown, an inability to find the delivery address, or to gain access to it if, for example, it's in a block of flats. We work with some of the best couriers in the business, and overall they provide an outstanding service.

Do I need to be at home?
We are very flexible with our deliveries and will aim to deliver to an address which suits you – this does not need to be your home address. Goods can usually be left without signature - we prefer this with roof boxes. There's a "Special Delivery Instructions" box in the checkout area where we'll ask you to choose a typical instruction and then amend it to suit your particular requirements.

Payment options:

We take the following cards, and also PayPal. Please note that the entry on your card statement will be from "The Roof Box Company".

PayPal accepted

Secure payments

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Roof bar compatibility

Steel (22mm x 32mm) barsYes

Aero barsYes. fits bars up to 85mm wide x 32mm deep

Min. distance between roof bars498mm. Minimum distance between the rear bar and the hatch: 419mm

Max. distance between roof bars1102mm

Box features / capacity

Box opens fromBoth sides

Maximum loading capacity75kg

Volume430 litres

Length (internal)1850mm

General information


Guarantee5 years

Length2000mm. (external)

Width940mm. (external)

Height380mm. (external)




Add to Your Order Untick if not required:
Item: Description: Our price (each): RRP:
Long Wide roof box: £494.95 (rrp. £560.00)
Special offers:
FASTY promotion: £8.75 (rrp. £17.50)
Roof box adapters: £20.00 (rrp. )

All our prices include VAT at 20% Total: £494.95
 Our 90 day Exchange Scheme 
 Delivery charges and Payment options