Residential Wall Air Grille with Engineering-Plastic Parts for Crawl Space, without Electricity, Adjustable Louvers and Direct Screw-In Installation

Features: Automatic Temperature Response: Mechanical temperature-responsive control changes the vent opening as temperatures change, managing crawl-space without electricity.
Layered Vent Construction: Aluminum alloy and engineered components frame a front grille, fine mesh, and internal louvers to form a clearly defined passage.
Mechanical Opening Control: The temperature-responsive assembly changes the vent opening as conditions vary without wiring or an electrical connection.
Direct Replacement Process: Position the rectangular vent in a residential crawl-space opening and tighten the screws; the installation requires only standard tools.
Package Contents: The package includes 1 automatic crawl space vent with its framed grille, fine mesh, internal louvers, and mechanical temperature-control assembly.

Specifications: Component: Aluminum Alloy and Cold-Resistant Engineering Polymer
Size: Approx.20.32x15.24cm/8.00x6.00inch
Color: Blue/Black or Actual Product Color
Quantity: 1 Piece

Package Includes: 1 piece Automatic Vent Cover

note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order.
2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.