Stacking Kit: Stacking kits allow you to place your dryer on top of the washer, enabling you to make efficient use of the limited space in your laundry room. Front-load laundry stacking kits are NOT universal. Stacking kits are for use with Frigidaire front-load units ONLY. Space saver Easy installation Great for limited spaces or small laundry rooms. Installation instructions included. White Designed for 7.0 cu. ft. dryers with 3.5 cu. ft.- 4.0 cu. ft. or higher washers. Replaces Stackit7 and includes hardware for 4.0 cu. ft. or higher washers as well as 3.5 cu. ft. - 4.0 cu. ft. washers and works with all 7.0 cu. ft or higher dryers.