STEP 1: Create your roof opening size and upstand 80mm wide using a good quality roofing timber.
To assist you with the installation we have provided you the measurements below.
Roof Lantern Selection - Timber Kerb Opening Size
300mm x 300mm --> 100mm x 100mm
500mm x 500mm --> 300mm x 300mm
1000mm x 1000mm --> 800mm x 800mm
1200mm x 1200mm --> 1000mm x 1000mm
1500mm x 1000mm --> 1300mm x 800mm
1500mm x 1500mm --> 1300mm x 1300mm
1700mm x 1200mm --> 1500mm x 1000mm
2000mm x 1000mm --> 1800mm x 800mm
2200mm x 1200mm --> 2000mm x 1000mm
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