Tensioner Slat Kits for Slat bed bases easily strengthen the existing flexible slats on your slat bed. Each kit consists of 5 flexible tensioner slats and 10 sliding tension adjusters. This is sufficient to fit to 5 rows on one side of one bed where you require additional support. Widths available are 53mm and 38mm for all bed sizes. Replacement Flexible Bed Slats can be purchased separately.