(SKU S-CO-24X4S-XX) Duct opening size - 4 (Height) x 24 (Width) White Corinthian Supply vent cover with screw holes and a damper for $197.40 each / 2 for $394.80.
Duct opening size - 24.5 (Height) x 20.5 (Width) 26x22 (Overall size) White Corinthian Return vent cover with screw holes for $594.00 each
