The Access Tools Air Wedge will only inflate to about 2.1/2" which may not be enough.
They do hold air quite well overnight and are very easy to inflate and deflate even with weight on them.
The Winbag MAX - E15730MAX will go up to 2.3/4"
You could also have some precut blocks of wood with locating pegs to use with the airbags to increase their height when needed.
They do hold air quite well overnight and are very easy to inflate and deflate even with weight on them.
The Winbag MAX - E15730MAX will go up to 2.3/4"
You could also have some precut blocks of wood with locating pegs to use with the airbags to increase their height when needed.