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10 cards from this deck
Two vertical jambs and one horizontal head
Rebated butt joint
Large steel square
Measure both diagonals - they must be equal
Prevents shifting during handling and installation
Maintains correct door opening width during installation
2-3mm
Allows for timber expansion/contraction due to moisture
Decorative trim that covers joint between frame and wall
Screws fasten jambs to masonry or timber walls
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