The Unabbreviated Horologion or Book of the Hours. Brown cover. New cover (2020), but same text as 1997 version inside.

Hardcover, 408 pages. 
Publisher: Holy Trinity Publications - Holy Trinity Monastery, 2nd Printing of 2nd Edition, 1997 (2020 new cover, same text inside). 
Size: 8 5/8" x 11 1/4"  
ISBN: 9780884653714