Use the two diagrams immediately below to help explain how to measure to ensure you order the correct size for your project.
Dome only - if the measurement from the outside edge to outside edge of your upstand is 600mm you will need a dome of at least 600 x 600mm.
Roof Dome with PVC kerb - Select a roof dome size that is the same size or bigger than the structural opening in your roof
|Dome Size (mm)||Daylight Size (mm)||Dome Size (mm)||Daylight Size (mm)|
|600 x 600||450 x 450||1200 x 900||1050 x 750|
|750 x 750||600 x 600||1200 x 1200||1050 x 1050|
|900 x 600||750 x 450||1350 x 1050||1200 x 1200|
|900 x 750||750 x 600||1350 x 1350||1200 x1200|
|900 x 900||750 x 750||1500 x 1050||1350 x 900|
|1050 x 600||900 x 450||1500 x 1500||1350 x 1350|
|1050 x 750||900 x 600||1800 x 900||1650 x 750|
|1050 x 1050||900 x 900||1800 x 1200||1650 x 1050|
|1200 x 600||1050 x 450||1800 x 1800||1650 x 1650|
The lead times and delivery service are displayed against each product, just below the price.
We will continue to send items on a Next working day delivery, but please accept delivery might take longer, this is out of our control.
Please note, for certain products and delivery zones we can offer AM deliveries and Saturday Deliveries, if available, you'll be able to select and pay for these options via the checkout.
Delivery Charges will be applied for deliveries to geographical areas represented as Zones C, D and E:
This includes certain parts of Scotland, Scottish Islands, Northern Ireland, Channel Islands and IOM)
You can return a standard product (most access panels and loft hatches) within 14 days of receipt. Roof domes, Roof Lights, Roof Hatches and AOV Smoke Vents will be subject to a collection restocking fee.
Please note Made to measure products cannot be returned.
Click here to download a return form.