Filtering Flask, Capacity – Metric 4 L, Capacity – English 1.06 gal, Flask Type Filtering, Overall Height – Metric 380 mm, USP Specification Type I, Includes Closure No, Closure Type Stopper, Neck Style Straight, Closure Material No Closure, Compatible with Stopper Size 12, Sterile/Non-Sterile Non-Sterile, Autoclavable Yes, Body Color Clear, Graduated Yes, Graduation Increments – Metric 250 mL, Glassware Class A, ASTM Specification E1406, Basic Material Glass