Carlon B112HB Single Gang Handy Box Carlon B112HB Single Gang Handy Box Features: •Flexible, can be used for many applications •Thermoplastic construction that will not rust or conduct electricity •Built in cable clamps to hold wire f irmly in place •6 knockouts for easier wiring •Use with Blank Cover HB1BL (1024-0752), Toggle Switch Cover HB1SW (1024-0737), Duplex Receptacle Cover HB1DP (1024-0729) or GFCI Cover HB1GF (1024-0109) •UL listed E42728 and two hour fire rated for walls and ceilings •Grey PVC •18.4 cubic inch •1-7/8" x 4" x 2-1/8