The RP109Si is a weather proof threshold plate seal suited to outward opening broad butt hinged doors. It is ideal for use with a panic type exit device (by others). For acoustic applications the void under the threshold should be filled with sound foam or other suitable material (by others). Min/Max Compression of seal 0mm/2mm. Location Door sills. Outward opening doors (Broad Butt hinges recommended) Seal Sizes Available in stock lengths. Standard Finish Aluminium anodised 25 microns. Satin Clear (silver) or Bronze. Fixing Method Zinc plated, cross recess head CSK S.T. screws of the appropriate size and colour are supplied, or can be fastened with builders adhesive for concealed fixing (user determined). Used in conjunction with RP93Si, astragal seals and suitable panic type exit devices. Seal Material Silicon Rubber (SE) (black). Replacement Seal RP393Si.