IKEA BILLY Height Extension Unit, 80x28x35cm, White
IKEA BILLY Height Extension Unit, 80x28x35cm, White
SKU: SKU: 4100
Click And Collect
This product is available for pickup at our Auckland Store.
Address
Building A, 32 Patiki Road, Avondale, Auckland
Open Hours
Mon-Sun, 9:45am - 5:15pm
You will receive an email notification when your order is ready for pickup.
Pickup can be selected at checkout after you enter your address.
Mattress Size Guide
Why Mattress Sizes Vary?
- Mattress sizes differ by country due to different manufacturing standards.
- In New Zealand, standard sizes are different from global sizes, commonly found in China and some European markets.
- Choosing the correct size ensures a perfect fit for your bed frame!
How to get it right:
✔ Always check the bed frame inner size in cm before you buy.
✔ Make sure your bed and mattress are from the same size family — NZ or global.
✔ Product titles clearly indicate if it’s a “NZ Queen” or “Global Queen” (etc.) — always double-check before purchasing.
📏 Mattress Size Comparison Table
(NZ Standard vs. Global Sizes)
| NZ Size | Global Size | |
| Single | 91 x 188cm | 90 x 200cm |
| King Single | 107 x 203cm | - |
| Double | 137 x 188cm | 120 x 200cm |
| Queen | 153 x 203cm | 150 x 200cm |
| King | 168 x 203cm | - |
| Super King | 183 x 203cm | 180 x 200cm |
✅ Choosing The Right Mattress
NZ Standard Sizes
- These are the most common sizes in New Zealand.
- If your bed frame was purchased in NZ, it likely fits these dimensions.
Global Sizes
- Follow international sizing (commonly used in China & Europe).
- Example: A Global Queen (150 x 200cm) is slightly smaller than an NZ Queen (153 x 203cm).
- Urban Sales offers bed mattresses that match both local and global standards.
⚠️ Before You Buy
✔ Double-check your bed frame size before purchasing.
✔ Compare against the size chart.
✔ Contact us if unsure.
Mattress Size Guide
Why Mattress Sizes Vary?
- Mattress sizes differ by country due to different manufacturing standards.
- In New Zealand, standard sizes are different from global sizes, commonly found in China and some European markets.
- Choosing the correct size ensures a perfect fit for your bed frame!
How to get it right:
✔ Always check the bed frame inner size in cm before you buy.
✔ Make sure your bed and mattress are from the same size family — NZ or global.
✔ Product titles clearly indicate if it’s a “NZ Queen” or “Global Queen” (etc.) — always double-check before purchasing.
📏 Mattress Size Comparison Table
(NZ Standard vs. Global Sizes)
| NZ Size | Global Size | |
| Single | 91 x 188cm | 90 x 200cm |
| King Single | 107 x 203cm | - |
| Double | 137 x 188cm | 120 x 200cm |
| Queen | 153 x 203cm | 150 x 200cm |
| King | 168 x 203cm | - |
| Super King | 183 x 203cm | 180 x 200cm |
✅ Choosing The Right Mattress
NZ Standard Sizes
- These are the most common sizes in New Zealand.
- If your bed frame was purchased in NZ, it likely fits these dimensions.
Global Sizes
- Follow international sizing (commonly used in China & Europe).
- Example: A Global Queen (150 x 200cm) is slightly smaller than an NZ Queen (153 x 203cm).
- Urban Sales offers bed mattresses that match both local and global standards.
⚠️ Before You Buy
✔ Double-check your bed frame size before purchasing.
✔ Compare against the size chart.
✔ Contact us if unsure.
In Stock - Ready to Ship
Great Value Promise
Fast & Safe Shipping
7 Day Returns
How To Get It
Check Delivery Costs
Pickup Available at Auckland Store
Check Pickup Address
- Designed to extend the height of the classic BILLY bookcase
- Maximizes vertical wall space and reduces floor clutter
- Timeless design that has remained popular since 1979
- Ideal for book lovers seeking additional storage
- Seamlessly integrates with existing BILLY units
Specifications
Product Depth:
80 (cm)Product Width:
28 (cm)Product Height:
35 (cm)Product Colour:
WhiteRoom Category:
Living RoomProduct Style:
ScandinavianProduct Type:
Bookcase ComponentTop panel:
Foil
ABS plastic
Side panel/ Back:
Foil
ABS plastic
Paper
Package Total Quantity:
1Package Number:
1Package Qty:
1Length:
77.6cmWidth:
35.8cmHeight:
5.5cmWeight:
8.4kgWarranty Period:
1 Year- Wipe clean with a cloth dampened in water or a non-abrasive detergent. - Wipe dry with a clean cloth.
- Price stated is for the Height Extension Unit only. Other accessories are not included.
- Good to Know
Safety bracket for fixing to wall included.
To be combined with BILLY bookcase 80x202 cm for added storage vertically.
IKEA
IKEA was founded by Ingvar Kamprad in 1953 and came to life as a mail order catalogue business in the forested town of Älmhult, Sweden. Today, it’s a global home furnishing brand that brings affordability, design and comfort to people all over the world. We may have come a long way since our humble beginnings, but our vision remains the same: to create a better everyday life for the many people.
Shipping FAQ’s
How much is shipping?
How much is shipping?
You can check individual product shipping costs by entering your postcode with our Check Estimated Shipping Fee tool. Shipping costs vary depending on your location. You’ll see the exact charge once you enter your address at checkout.
When will my order be shipped?
When will my order be shipped?
If your item is in stock, we aim to ship it within 2 business days. For pre-orders, we’ll start processing and delivery as soon as the stock arrives.
How long will delivery take?
How long will delivery take?
We work with trusted courier partners across New Zealand to deliver your order with Track and Trace. Deliveries usually happen during working days.
The delivery timeframe begins once the courier picks up your parcel from our warehouse, after we’ve finished processing your order. Courier delivery times are usually:
• 2–3 working days to Auckland
• 3–5 working days to the rest of the North Island
• 5–10 working days to the South Island
• Up to 14 working days for rural or remote areas
Do you deliver outside of Auckland?
Do you deliver outside of Auckland?
Yes - all products can be shipped anywhere in New Zealand, including rural areas.
Will I pay extra for deliveries to rural areas?
Will I pay extra for deliveries to rural areas?
Yes - rural deliveries may have an extra surcharge. Our shipping estimates cover delivery to the nearest freight depot or most metro addresses. If the original shipping fee doesn’t cover the rural surcharge, your order will go to the closest depot, and you’ll need to arrange delivery from there. If you prefer door-to-door delivery, we’ll email you the extra rural surcharge cost before shipping.
Can I ship highly fragile items?
Can I ship highly fragile items?
No - we don’t ship highly fragile products like mirrors or glass tops.
You can pick them up yourself or arrange your own trusted courier from our Auckland warehouse. If you choose to have Urban Sales ship them, it’s at your own risk - we’re not liable for any loss, damage, or delivery delays, and claims or warranties will be void.
What is a ‘Delivery Point’?
What is a ‘Delivery Point’?
The Delivery Point is the outside area of your address - usually the front door or a spot you’ve specified. For multi-level buildings, it’s the ground floor. For rural deliveries, the delivery point may be the nearest depot, not your residence. If you ask the courier to bring items inside beyond the delivery point, an extra fee will apply.
