ACCESS ORIGINAL BOX COVER 20-26 GM HD 8' 4x6" and the air fitting is

and the air fitting is molded in to the spring

Continuous Power Handling (RMS) : 100 Watts

Made of impact resistant acrylic with a dark smoke finish or warp-resistant ABS construction in a chrome or matte black finish

Non-scratch security grommets allow user to tie down cover or lock it in place

ACCESS ORIGINAL BOX COVER 20-26 GM HD 8' 4x6" and the air fitting isACCESS COVER ORIGINAL SOFT ROLL UP TONNEAU COVER ; 20 26 SILVERADO SIERRA HD 8 FOOT BOX (EXC BED SIDE STORAGE BOXES) Cover Rolls Open In Seconds Enhances The Look Of Your Truck Fully Operational In Extreme Weather Conditions Includes Auto Latch II Locking System 5 Year Warranty