Barska Through-The-Wall Drop Box w/Adjustable Chute White Medium. The top slot of the drop box accepts items up to 9.6 inches in width and can be mounted directly to a wall using the included mounting hardware. The adjustable segmented chute can be configured to fit a wall that is 2.8"-6thick. Specifications for Barska Through-The-Wall Drop Box w/Adjustable Chute: Manufacturer: Barska Color: White Fabric/Material: Steel Lock Type: Key Lock Fire Resistant: No Size: Medium Weight: 8.85 lb Features of Barska Through-The-Wall Drop Box w/Adjustable Chute Easily Adjust Chute Length with Included Pins Classic and Straightforward Design Large Rear Door Makes Accessing Deposited Items Easy with The Included Keys Pre-Drilled Wall Mounting Holes Includes 2 Keys Mounting Hardware and Chute Adjustment Pins Package Contents: Barska Through-The-Wall Drop Box w/Adjustable Chute 2 Keys Mounting Hardware Chute Adjustment Pegs Barska CB13954: Through-The-Wall Drop Box w/Adjustable Chute White Medium