$168.53 4″ Compact Sight Glass Insert Borosilicate 4" Compact Sight Glass Insert Borosilicate quantity Add to cart SKU: B54BMPS-GL400 Category: Sanitary Sight Glass Tags: sanitary sight glass, sight glass Additional information Additional information Weight 0.25 lbs Dimensions 7.5 × 7.5 × 7.5 in Related products 2″ NBR Sight Glass Seal KIT $6.56 Add to cart 2.5″ Sight Glass – POLYCARBONATE $426.13 Add to cart 6″ 316L In-Line Sight Glass CxC No Shield $745.61 Add to cart 1.5″ Sight Glass – POLYCARBONATE $313.81 Add to cart