Check the listing for details. Push Up Drop Down Track for Rigid Sign Letters PUDD 8'. Condition: New. Listed at 14.98 USD. Push Up Drop Down Sign Letter Track Push Up Drop Down Letter Track (PUDD) is used with .060 to .090 Rigid Sign Letters.This strip is 8' foot long and 1 1/2" inches high and is made of clear Acrylic plastic. This track can be used to repair your existing sign or build your own changeable letter sign.Rigid Letters are pushed up inside the top track, pushed flat against the sign face, then drop down into the bottom track.This track cannot be used with thinner .030 flexible letters. If you need track for .030 changeable letters visit my ebay store for .030 Sign Letter Track Price is for one 8' piece. When ordering enter the number of pieces you need. Shipping for additional pieces is free. If you need Rigid Letters, 030 Changeable Letters or 030 Sign Letter track Visit my eBay store.. Sign Letter Shop. Ships within continental US 48 states by UPS Ground for flat rate shipping charge listed. For shipping outside continental US including AK, GU, HI & PR shipping will be extra, email me for quote. No P.O Boxes for this item.