$160.52 3″ HSG Sight Glass Polycarbonate Insert 3" HSG Sight Glass Polycarbonate Insert quantity Add to cart SKU: HSG-POLY-300 Category: Sanitary Sight Glass Tags: sanitary sight glass, sight glass Additional information Additional information Weight 4.2 lbs Dimensions 7.5 × 7.5 × 7.5 in Related products 1″ Sight Glass – POLYCARBONATE $276.41 Add to cart 1.5″ FKM Sight Glass Seal KIT $22.09 Add to cart 4″ NBR Sight Glass Seal KIT $8.88 Add to cart 2″ NBR Sight Glass Seal KIT $6.56 Add to cart