This Mini Acrylic Suggestion Box is available in black or clear acrylic. It may be used as a suggestion box or donation collection box. The top slot measures 4"w x 3/8"d to accommodate cards as large as 4"x6", dollar bills and coin donations. Suggestion box comes complete with a clear header that holds 5"w x 7"h inserts to announce your fundraising goal or company name and information.