Envelope Writing Guide Magnifiers and More » Products Page » Writing Aids » Envelope Writing Guide Black flexible plastic rectangle has cut-out boxes for standard envelope information. Cut–out boxes for return address and recipient address. Makes it easy to feel and see where to put envelope information. Also available in business size. Product Options Envelope: -- Please Select -- Business Size Standard Combination of product variants is not available Quantity Price: from $2.25 Updating cart... Updating...