Comparison : Item # 150280, 8-1/2" x 11" Dimensions White Color Plastic Modular Sign Frame System
Item # 150280B, 8-1/2" x 11" Dimensions Black Color Plastic Modular Sign Frame System
Item # 150281, 7" x 11" Dimensions White Color Plastic Modular Sign Frame System
Item # 150281B, 7" x 11" Dimensions Black Color Plastic Modular Sign Frame System
Item # 150285, 3" W Dimensions White Color Plastic Modular Sign Frame System