The dimensions of a Tempur-Pedic TEMPUR-Ergo Smart Adjustable Base are 79.5" x 37.5" x 15.8" for a twin XL size, 73.5" x 53.5" x 15.8" for a full size, 79.5" x 59.5" x 15.8" for a queen size, 79.5." x 75.5" x 15.8" for a king size, 83.5" x 71.5" x 15.8" for a california king size, 83.5" x 71.5" x 15.8" for split cal king.

The Tempur-Pedic TEMPUR-Ergo Smart Adjustable Base weighs 128 lbs for a twin XL size, 152 lbs for a full size, 168 lbs for a queen size, 216 lbs for a king size, 216 lbs for a california king size, 130 lbs for a split california king size.

The weight capacity for a Tempur-Pedic TEMPUR-Ergo Smart Base is 750 lbs for all sizes, which includes the mattress, people, and anything else that will be used on top of the base.

A split king adjustable base is made up of two Twin XL adjustable bases placed side by side. This size is a great option for some couples because it features two separate bases for independent movement. There's a split in the bed so you can each select your own position.

A split head adjustable base is a base that is designed for couples who want to independently raise or lower their head. It is a single base, with a split head only, meaning the head of the base can be controlled separately. This provides a personalized experience for couples who want to watch tv, read, or have issues like snoring or acid reflux addressed.