Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 6" Vent Connection Compatible With Duct 12in Actual Filter Size – 33 4" Round Duct Pipe Product Details Size The SHEASC10W1-HP

Actual Filter Size – 33 3/4"w x 9 3/4" x 1"

actual front end outer dimensions are approximately 27 5/8" width X 27 5/8" height

+ Product Details Size – 30"w X 30"h is the size for the duct opening measurement only

actual front end outer dimensions are 25" Width X 25" Height

Actual Filter Size – 27 3/4"w x 31 3/4" x 1"

Drop Ceiling HVAC Supply Grille For T Bar Lay In 3 Coned 24" x 24" For 6" Vent Connection Compatible With Duct 12in Actual Filter Size – 33 4" Round Duct Pipe Product Details Size The SHEASC10W1 HP Actual Filter Size – 33 3 4"w x 9 3 4" x 1" actual front end outer dimensions are approximately 27 5 8" width X 27 5 8" height