Highly polished 316 cast stainless steel. Interior is powder coated for durable high gloss finish. Standard interior color comes in white. Threads into deck plate (12 treads per inch) 
 
*Custom colors interior available.
 
Size 3"   
Deck Plate Cut-Out 3-3/8" 
Deck Plate Overall Width 4-7/8"
Opening Dimensions 4-3/4" x 7-5/8" 
Height 9-1/2"  
Weight 4.2 lbs
 
Size 4"   
Deck Plate Cut-Out 4-3/8 " 
Deck Plate Overall Width 5-5/8"
Opening Dimensions 6-1/4" x 9-1/4"  
Vent Height  11-3/8"
Weight 7.2 lbs
 
Size 5"   
Deck Plate Cut-Out 5-3/8 " 
Deck Plate Overall Width 7-1/4"
Opening Dimensions 8-3/4" x 10-3/4"  
Vent Height  13-5/8"
Weight 10.2 lbs