For 6x8" Guerrilla Painter® ThumBox - Carry 4x6" or 5x7" panels. Each adapter can hold two wet panels or one watercolor postcard block. Basswood laminate with stainless steel clips.
For 9x12" Guerrilla Painter® Box - Increase the flexibility of your Guerrilla Painter® Box. Paint on and carry 8x10" or 6x8" panels. Each adapter holds two panels. Hardwood and aluminum. Set of two adapters, one of each size.