This Dryer Exhaust Periscope Kit Is A 0" - 5" Vent Periscope For Use With A Tight 2-1/2" Clearance. This Kit Contains One Male Fitting And One Extra-Long Draw Band Collar. Excess Length Can Be Trimmed To Fit. This Is An Accessory That Can Be Used With Most Dryers; Check To See If Your Model Number Is Compatible. Installing This Accessory Will Require Basic Hand Tools, Some Disassembly Of The Appliance And Novice Repair Experience. You Must Unplug The Appliance Or Shut Off The House Circuit Breaker Before Installing This Accessory.