Airtec 1′ X 1′ 4 Way White Plastic Grille with Damper. No collar on the back.

GRD grille/damper for low-clearance side/top entry use. Same construction as standard diffusers but no boot. Comes in all five grille styles & Retro. For residential/light commercial use, designed for 1-man installation only working below a ceiling. MPN: 81944

Features

• Mounting Clip accommodates thicknesses up to 1-1/4″
• Virtually airtight butterfly damper Rubber gasket delivers superior seal when closed.
• Actual Outside measurements of the faceplate are 11.25″x 11.25″. 
• Damper Handle allows smooth, easy turning adjustment from below for fully open to the tightly closed position
• Manufacturers Part # 81944 or GRD4
• High-Grade Polymer Grille resists breakage, scratching, yellowing and fading.
• Lightning-fast installation
• Downloads:
• Airtec Cutaway View
• Airtec Spec Sheet
• Airtec Key Features & Benefits
• Airtec Airflow
• Airtec install instructions
• Airtec 16 page brochure