Difference between Dual-Layer and Double-Sided DVD
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TDK White Inkjet Printable DVD+R Dual Layer
Amazon.com: DVD+R DL Double Layer Logo 8X 8.5GB 240min Video – LSK Media Logo Top, 50 Pack in Spindle | Blank DVDs for Burning Video | DVD Discs Blank | Recordable DVDs : Electronics
TDK Branded Dual Layer DVD+R
Verbatim - DVD+R DL x 20 - 8.5 GB - storage media - 95310 - DVD & Blu-Rays - CDW.com
JVC Develops World's First Single-sided, Dual Layer DVD-RW Disc Technology