Select the size that extends a minimum of 2 ” beyond each side of your slide box width. Features white awning fabric and white hardware. White 8’6″ Solera Slider is 102″ inches wide and has a box width range of 92″ to 97″ (Box width is measured on the outside front of box, including flange). Permanently attaches to slide room and automatically retracts/extends with slide-out. Extends up to 50″, that’s 8″ more than competitive brands; Cost-effective alternative to other slide-out awnings. Comes complete with awning rail and all mounting brackets. Measure between the outside edges of both Slide-Out flanges and order the Slide Topper size that allows for total fabric coverage over the Slide-Out box (the fabric itself will measure 5 shorter than the complete awning width). Fit Type: Universal Fit.