This pdf is 15 pages long, 1 page front cover, 1 page advertisement, 2 pages of editorial, 1 page ToC/foreword, 1 page SRD and 1 page back cover, leaving us with 8 pages of content so let's check this out!
You may notice that this is the longest Dungeon Dressing-pdf so far and that is due to some information overlapping with Dungeon Dressing: Doors. The decision to not let this impede on new page-count is commendable and further proof of the class act that is Creighton Broadhurst. Many other people would have just recycled the old content at the cost of the new one.
That being said, we kick off with rules for door-construction, characteristics, locks and similar protection as well as a short table of door conditions to further modify these. There also is a table of 43 entries to roll for characteristics, which include small doors integrated into the double-doors, sword-shaped iron wands, inlaid black gems etc.
After that we get door decorations with 12 entries for decoration-styles (why the table is based on a d20 instead of a d12, I don't know) as well as 19 decoration types ranging from images that include runes, images etc. as well as 12 different magical traps common on magical doors ranging from CR 3 to CR 9.
After that, we'll get a total of 100 entries of dressings and features that include foreboding magic mouths, doors ripped apart by SOMETHING, niches full of melted candle-wax, smashed tiles etc. lend further details to your doors.
Not stopping there, we also get 2 different traps, one a devious magnetic door (at CR 4), which can be modified by adding poisons and monsters. We also get a more traditional weakened ceiling-trap at CR 5.
Editing and formatting are top-notch, I didn't notice any glitches. Layout adheres to RSP's 2-column b/w-standard and the 2 artworks of double doors are nice indeed. The pdf comes in two versions, one optimized for screen-use and one to be printed out. The pdf is fully bookmarked.
This installment of the Dungeon Dressing-line is yet another solid addition to the series with some rather cool dressings, the maximum usability we've come to expect from the product line and all the necessary tools to make double doors stand out more. This pdf, though, in spite of its increased length, has something in common with its predecessor: It lacks something. In my opinion, a short table on how to open double doors (special handles, chains, clockwork mechanisms etc.), hinges etc. would have been the icing on the cake. As provided, I feel justified in rating this 4 stars - a good addition to the series, but not up to its full potential.