Grommets for 3/8" Hole Diameter with 1/4" ID (25 ea
1/4 in Dr Tamper-Proof T7
If you want a tube micrometer that will meet your expectations
Cast Pipe and Nail Embedded Wood Recovery @ 90 F Rise 165
Paper material
Broan 509S Exhaust Fan, 180 cfm, 195 sq ft Coverage, 8 in Duct, 9 sones, For 4 1/2 in to 9 1/2 in Wall Thick IP-2P-15-75-SR-PN Grommets for 3/8" Hole DiameterExhaust Fan, Control Type Rotary Dial, Duct Diameter 8 in, Exhaust Airflow @ 0. 000 in SP 180 cfm, For Maximum Wall Thickness 9 1 2 in, For Minimum Wall Thickness 4 1 2 in, Housing Material Steel, Housing Finish Galvanized, Includes Backdraft Damper, Rotary On Off Switch, Weather Hood, Maximum Airflow 200 cfm, Maximum Coverage Area 195 sq ft, Maximum Noise Level 9 sones Type Through the Wall Voltage 120 V AC CFM @ 0. 000 In. SP 180 cfm Grille Color