On-Q by Legrand ; Blank Snap-In Keystone Insert in ivory color is made of high impact flame retardant plastic. It is designed to cover unused ports until needed. It feature use in all keystone wall plates and used in any port faceplates that fills open positions. It measures 0.67 Inch x 0.79 Inch x 0.87 Inch. It is suitable for residential application. Blank Insert is UL listed. Also known as -On-Q WP3455-IV Blank Keystone Insert Snap-In/Wallplate/Strap Mount Plastic Ivo