The push bar 33" ctc, 1" diameter tubular, 1-3/4" door thickness, t1 thru bolt mounting, black anodized aluminum finish is an architectural door hardware component designed for use on metal and wood doors. this push bar features a 1" diameter tubular construction and is designed for a standard 1-3/4" door thickness. the unit provides a 2-3/4" projection from the door surface and a 1-3/4" clearance, allowing for comfortable operation. it utilizes a t1 thru bolt mounting system, which includes 1/4"-20 x 2-1/4" thru bolts and finish washers for installation on metal and wood doors. the push bar has a 33" center to center dimension and an overall length of 36.81". this hardware meets ansi 156.6 j501 standards for architectural door trim. the black anodized aluminum finish provides a consistent aesthetic for various door applications.