If stacking one screen isn't enough, BeatDown Outdoors The Ultimate Shorty Double Stack Fish Finder Mount comes standard with all the best features of the original Ultimate Shorty but with the ability for two screens. The Patented Reverse Telescopic design provides the capability to view your graphs from the deck of your boat to 17 inches in height with the twist of a knob. Catch that fish of a lifetime. FeaturesPatented Reverse Telescopic design allows you mount to extend from the deck of the floor to 17 inches in height Patented locking collars are locked by tightening the collar with the oversized knobs.Beatdown Bi-Metal Technology, 6061 Aluminum 304 StainlessCompatible with Garmin, Humminbird, and LowranceCapability to double stack fish finders