Serta ® Motion Perfect ® From $1,599 (Queen Adjustable Set Upgrade) This upgraded version of the popular Motion Perfect ® model packs in all the bells and whistles for even more ways to customize your comfort. And the headboard brackets let you add the headboard of your choice. There are legs with casters. It had only one motor this Serta has two. Location. 2 days later when the box arrived we thought "there's no way there's a King size mattress 12 inches thick in there"! Your Serta ® Motion Perfect III Foundation adjustable base is warranted by the manufacturer against defects in materials or workmanship for a period of two years from the date of purchase to the original Purchaser. Listed Manufacturer . Serta Motion Essentials 3, or 4, Plus, Custom, or Perfect 2, 3, and 4th Gen/Ease or Ergo Replacement Power Cord Kit (Not ME 1,2, or Slim- w/o Remote) 4.8 out of 5 stars 43 $89.00 $ 89 . Add To Your Comparison Page. Serta Motion Essentials Adjustable Foundation. We have been in the market for a motion adjustable foundation for quite a long time. As a first review and one who has read many reviews I'll be brutally honest. The leg extentions are 3 inches. There are a number of retailers carrying Serta Perfect Sleeper mattresses who also carry the Serta Motion Essentials Adjustable Foundation. Serta. Adjustable Bed Name and Model. You can get another set and add a footboard too. These include legs, leg extentions and headboard brackets. After months of looking thru numerous reviews on many different mattresses and physically driving around all over to see ones I thought my wife and I would be interested we ordered the Serta 12-inch Gel Foam 3 layer memory foam mattress in an Eastern King size model. By using this base, you can experience ideal comfort and support, no matter what you're doing in bed. The Serta motion perfect 3-1 adjustable base transforms your bed into more than just a place to sleep. The Serta Motion Perfect Adjustable Foundation may be customized with serta's array of accessories. The legs comes in a choice of three sizes, 2, 7 and 9 inches. The first thing is the price, the least expensive one we had found was $498.00. 00