Channel Master (14 inch)

Channel Master – 14” Back Window Tool
By Double D Tools
The Channel Master 14” was engineered for one purpose: mastering the deep channels and tight curves of modern back glass. Designed specifically for rear window installations, this premium hard card gives installers the reach, control, and pressure needed to lock film perfectly into defroster lines, corners, and recessed channels where standard cards fall short.
Its extended 14-inch profile allows smooth, even pressure across wide rear windows, helping eliminate fingers and trapped moisture without excessive repositioning. The precision-cut edges and ergonomic contour let the tool glide naturally along the curvature of the glass while maintaining consistent contact.
Whether you're working tight automotive back glass, aggressive defroster lines, or deep window channels, the Channel Master keeps pressure exactly where it needs to be—driving water out and seating film with authority.
Key Features
14” extended reach for large rear windows and deep channels
Precision-formed edges designed to follow curved automotive glass
Rigid pressure control to push moisture out along defroster lines
Installer-focused geometry for smooth, confident handling
Professional-grade construction built for daily shop use
Why Installers Use It
The Channel Master bridges the gap between traditional hard cards and specialty channel tools. It delivers the reach of a large card with the precision needed for back window detail work, making it a go-to tool when tackling difficult rear glass installs.
Control the channel. Control the install.
With the Channel Master 14”, the back window finally works with you instead of against you.