The distance between legs on an adjustable base can be helpful information to consider when placing the base inside a bed frame.
If you’re unsure which adjustable base model you have, you can reference our guide on identifying your base here.
Below, each adjustable base model includes a breakdown of dimensions by base size.
Reading the Measurements
- Width‑wise leg spacing: Inside distance between the two legs at the head or foot of the base
- Length‑wise leg spacing: Inside distance between the legs along the length‑wise side of the base
- Measurements reflect the space between legs, not the overall width or length of the base
- For Split King bases, measurements apply to individual bases
Ease® 4.0 Power Base*
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Twin
- Width‑wise leg spacing: 28.74"
- Length‑wise leg spacing: 35.17”
Twin Long
- Width‑wise leg spacing: 28.74”
- Length‑wise leg spacing: 39.29”
Full
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 35.71”
Queen
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 39.29”
King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
California King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
Split California King
- Width‑wise leg spacing: 28.74”
- Length‑wise leg spacing: 39.29”
TEMPUR‑Ergo® 3.0 Power Base*
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Twin Long
- Width‑wise leg spacing: 25.35”
- Length‑wise leg spacing: 39.29”
Full
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 36.22”
Queen
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 39.29”
King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
California King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
Split California King
- Width‑wise leg spacing: 25.35”
- Length‑wise leg spacing: 39.29”
TEMPUR‑Ergo® Smart Base*
Click for dimensions
Twin Long
- Width‑wise leg spacing: 25.35”
- Length‑wise leg spacing: 39.29”
Full
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 36.22”
Queen
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 39.29”
King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
California King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
Split California King
- Width‑wise leg spacing: 25.35”
- Length‑wise leg spacing: 39.29”
TEMPUR‑Ergo® ProSmart® Base*
Click for dimensions
Twin Long
- Width‑wise leg spacing: 28.74”
- Length‑wise leg spacing: 39.29”
Full
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 36.22”
Queen
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 39.29”
King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
California King
- Width‑wise leg spacing: 55.04”
- Length‑wise leg spacing: 39.49”
Split California King
- Width‑wise leg spacing: 28.74”
- Length‑wise leg spacing: 39.29”
TEMPUR‑ActiveBreeze® Smart Base*
Click for dimensions
Twin Long
- Width‑wise leg spacing: 25.35”
- Length‑wise leg spacing: 39.29”
Queen
- Width‑wise leg spacing: 40.55”
- Length‑wise leg spacing: 39.29”
Split California King
- Width‑wise leg spacing: 25.35”
- Length‑wise leg spacing: 39.29”
* Dimensions of each individual base may vary
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