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MJC | Instruction Manuals

Rail Size Chart
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 Door Opening Size

(Width)

Recommended Rail Size

(Length)

24 In.

4.5 Ft.

28 In.

5.5 Ft.

30 In.

5.5 Ft.

32 In.

6 Ft.

36 In.

6.6 Ft.

38 In.

7 Ft.

40 In.

7.5 Ft.

42 In.

8 Ft.

For all other Door Opening Sizes, use this formula to find the Recommended Minimum Rail Length

(Single Rails Only)

(Door Opening * 2) + 6"

(Round up to the nearest half-foot)

For Bypass Systems, use this formula to find the Recommended Minimum Rail Length (Door Opening + 6")

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