Pinit Sleeves for 12 x 18" Image/ Tabloid-Extra. 12-7/16 x 18-1/4". POLYPROPYLENE1-1/2"Resealable Flap. SKU: SPP1218FR (0)No Reviews yet Add to Shopping Cart Details Crystal Clear Sleeve for 12 x 18" Poster/ Art/Tabloid-extra. 12-7/16 x 18-1/4" 1.5 mil POLYPROPYLENE. Comes with a 1-1/2" Resealable flap. The reseal... Details Back DetailsCrystal Clear Sleeve for 12 x 18" Poster/ Art/Tabloid-extra. 12-7/16 x 18-1/4" 1.5 mil POLYPROPYLENE.Comes with a 1-1/2" Resealable flap.The reseal tape is on the body of the sleeve. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review