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How to measure for the correct sizeUSR-CC520F
SAVE MONEY ON YOUR BILL - PRESERVE YOUR HVAC UNIT - Highest Rate Of Air Flow Efficiency - Easy Unrestricted Air Flow For Your HVAC System - 1/2" x 1/2" x 1/2" Cube Core - Offers 90% Free Area
Concealed Hinges and Latches to achieve a clean and modern look
R6 Fiberglass Back Plenum accepts 6" to 18" Round Spin-in Collars or Start Collars (not included) - Accepts 1" disposable filter (not included) - Recommended Size: 20" x 20" x 1"
QUALITY PACKAGING & SATISFACTION GUARANTEED- Carefully Shrink Wrapped With Solid Cardboard Backing To Prevent Damage In Shipment - Hand Inspected for Quality - 100% Satisfaction Guaranteed, Don’t worry you’re covered by our 100% money back guarantee no questions asked. Click Add to Cart now and enjoy a new updated refreshing look to your home