Grandeur Deluxe Twin XL 2-Sided Mattress and Box Spring SetEnhanced Comfort Each Twin Extra Long Mattress (39" W x 80" L x 12" H) features a Medium Firm Comfort Level and offers longer lasting, sleep support for years to come. Top Quality 357 verticoil unit, with 13 gauge unit and 6 gauge border, 8 double edge guards better border support. Box Spring Matching Universal Box Spring Wood Foundation is strong and sturdy. Bed Frame is NOT included. Must provide a working phone number for shipping. Flippable Double