Attics Are Not a reception friendly environment and Never Will Be a reception friendly environment.
Install the ANT751 , VHF channels 7 thru 13 , UHF channels 14 thru 51 antenna in the attic aimed at about 48 degree magnetic compass direction.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.
The ANT751 has some forward antenna signal gain and also receives at the front angles , back angles , back of the antenna.
The ANT751 should also receive KTWU UHF Digital channel 36 PBS that will be at a back angle to the ANT751 antenna.
The DB4e with its reflector screen will most likely in combination with being in the attic , block reception of KTWU , and the DB4e is a UHF channels 14 thru 51 design antenna.
And also I am recommending the ANT751 because the Digital Tv stations/channels to the , north west are currently in the UHF channels 14 thru 51.
And.
That is likely to change in the near future , as the UHF channel band at your area becomes more crowded.
Then Digital Tv stations will go to the VHF channel band 7 thru 13.
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The ANT751 comes with a , J pole type antenna mount.
http://www.solidsignal.com ,
http://www.amazon.com.