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The Hart & Cooley 1001DC611 DC Primex Terminator Diffuser Collar is a 6" industrial-grade plastic termination collar for round ducting and a mounting collar for diffusers and grilles in air distribution systems. It is preset for 1/2" and 5/8" drywall, includes a 90° back-stop for level mounting, an offset for joist clearance, a Duct-Stop-Point to prevent screw penetration, and a rigid bottom flange to hold diffusers snug.
6" plastic terminator collar for ceiling or wall duct terminations; preset drywall sizing; built-in screw protection and flange for secure diffuser seating.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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