A new size guide for Royal Mail letters and parcels, including a third slot for the new Small Parcel category. This guide has: Great for eBay sellers, or anyone sending lots of variously-sized parcels.. There are two drawings included here: a three slot version and a two slot version, for those with smaller lasers, or who just need the letter sizes. For most of us, letters are either "Put a stamp on it" or "Take it to the Post Office", so we really just need those small "stampable" slots.Just laser cut it. I used 3mm hardboard with a shiny white surface. Black lines are cuts, blue lines are engraved. All the text is as vector outlines, there's no raster engraving. Corel Draw and PDF formats