Important to source screws that work with your sub-straight and application to get the best results and firm support that is why screws are not included. Use silicone sealant to seal any old holes (not included). Installation instructions are included in box and can be downloaded below in this listing.
Product Dimensions: 27.5 height, 15 horizontal projection when open. Brackets (end caps) 4 h x 1.76 w x 2.4 d. Four #10 pan head screws are recommended per each end for maximum hold (8 screws total not included). Always source screws that are best for your specific installation needs.