The Topcoat is recommended for rolled application or spraying of the Screen Goo. Screen Goo Digital Grey Lite Topcoat - 3.78 L (#4602) 4602US$529.99 Screen Goo Digital Grey Lite Topcoat - 500 mL (#4599) Screen Goo Digital Grey Lite Topcoat - 500 mL (#4599) 4599US$74.99 Screen Goo Digital Grey Lite Topcoat - 1000 mL (#4600) Screen Goo Digital Grey Lite Topcoat - 1000 mL (#4600) 4600US$149.99 Screen Goo Digital Grey Lite Topcoat - 2.3 L (#4601) Screen Goo Digital Grey Lite Topcoat - 2.3 L (#4601) 4601US$299.99 Screen Goo Digital Grey Lite Topcoat - 16 L (#4603) Screen Goo Digital Grey Lite Topcoat - 16 L (#4603) 4603US$1,999.99 Screen Goo by Product Number Home Theater Screen