Very informative. What is the Guarantee on this Acrylic coating ? I think this protective coating is also necessary for the inner side of your Company's Washroom frosted glass ALUMINUM DOOR (or is this Door also GI metal ??). 2. Does the Company also provide skilled installation Workforce (is the calculation based on running foot OR as per Door) 3. What are the prerequisites to be noted BEFORE INSTALLATION of the selected Door ?