Add style to your indoor AC/heat/HVAC vents with this decorative steel floor register with a high impact plastic damper box, now in a convenient 8 pack Gothic design, steel plated floor register in textured black finish Fits in a 4\" x 10\" floor duct opening; dimensions are for the opening in the floor - the damper will fit inside, the steel top will be slightly larger to sit on top of the floor Metal damper boxes rust and seize up, so we make our damper boxes with high impact plastic; this is not a cheaper option, it’s the best option Easy to install and maintain, simply wipe clean with a damp cloth; filter retainer and filter are sold separately › See more product details