Select 70mm frame thickness if you are looking to match the frame size with larger pairs of gates, otherwise a 45mm frame thickness is perfectly fine.
Both of the gates above are in Douglas Fir you can see the lack of knots on the unpainted one and the beautiful grain that you get with this timber and although a softwood it is particular dense and especially hard. Larch has many of the same properties as Douglas Fir at a slightly cheaper price.
|Choose your timber||Base coat treated Scandinavian Redwood|
|Choose your height at hanging stile||1.2m|
|Choose your width||900mm|
|Choose your frame thickness||45mm|