The Beautyrest Black® Series Three 15" Firm Mattress weighs 69 lbs for a twin XL size, 91 lbs for a full size, 129 lbs for a queen size, 166 lbs for a king size, 174 lbs for a cal king size, and 180 lbs for a split cal king size.

The dimensions of a Beautyrest Black® Series Three 15" Firm Mattress is 80" x 38" x 15" for a twin XL size, 75" x 54" x 15" for a full size, 80" x 60" x 15" for a queen size, 80" x 76" x 15" for a king size, 84" x 72" x 15" for a cal king size, and 84" x 72" x 15" for a split cal king size.

Yes, it is recommended to use a Box Spring with the Beautyrest Black® Series Three 15" Firm Mattress. Box springs provide mattress support, and improved airflow. They can also help distribute weight and reduce sagging while adding bed height.

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

Mattresses last an average of 8-10 years.

Cleaning a mattress is a simple step-by-step process. First, remove all bedding and covers to wash separately. Then, use the upholstery attachment on your vacuum cleaner to thoroughly vacuum the entire surface of the mattress, paying special attention to seams, crevices and edges. Then, spot-clean stains where needed using different solutions depending on the stain type. Once the mattress is clean, sprinkle a generous layer of baking soda over the surface to deodorize. After a few hours (ideally overnight), vacuum the mattress thoroughly to remove all residue.