ILSCO GTC-500 Yellow Insulating Cover Snap Together 4” x 2 1/2” NOS 276O. Certified for 90 C, Rated 600 Volts, Installs quickly and saves labor time by eliminating taping, Provides ease of identification in the field, Ensures reliability This ILSCO GTC-500 Yellow Insulating Cover is designed for snap together use and is suitable for wall applications. The cover is made of ABS/Plastic material in a rectangular box shape with 5 outlets. The yellow color and model number of Yellow 4” x 2 1/2” make it easy to identify. The cover is ideal for electrical wiring and is perfect for use in Electrical Boxes Enclosures, Electrical Boxes, Panels Boards, and Electrical Equipment Supplies. It is a new old stock (NOS) item that is in excellent condition. Purchase this ILSCO GTC-500 Yellow Insulating Cover for your electrical needs.