$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 4″ Sight Glass – POLYCARBONATE $647.23 Add to cart 3″ Sight Glass – POLYCARBONATE $500.76 Add to cart 6″ NBR Sight Glass Seal KIT $24.05 Add to cart 2″ Sight Glass – POLYCARBONATE $332.52 Add to cart