Beige Metal Thermostat Guard with Solid Base - Tamper-Proof Cover, 6-1/4" x 4-3/4" w25h25 + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 16" duct opening (measured at the opening)

+ Product Details Size - 22"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 38 5/8" height

Actual Filter Size – 15 3/4"w x 31 3/4" x 1"

Beige Metal Thermostat Guard with Solid Base - Tamper-Proof Cover, 6-1/4" x 4-3/4" w25h25 + Product Details Perfect Fit+ Product Details Heavy Duty Steel Construction Made from 20 gauge steel for superior strength and durability. Tamper Proof Design Provides robust protection to prevent unauthorized access and ensure consistent thermostat settings. Secure Locking Mechanism Features a permanently attached eight tumbler lock with a supplied key for added security. Solid Base for Stability Built with a solid base for reliable mounting and stability. Universal Fit