Example below works for both single and double.
Queen has 19 rows of slats
1
2
3
For each bed size, do not insert the
rows of slats on both ends of the
frame.
6
ATTACHING THE PISTONS TO THE FRAME
FF
10
4
5
6
7
FF=
x2
Secure the longer metal ends of the pistons to the frame.
This end
8
9
10
11
G=
12
13
14
15
x2
16
17
18