Qty 1 BS B Safety Systems VSE?-VST Vent-Saf explosion vent 44.5" x 44.5" Description: This is for 1 BS B Safety Systems VSE?-VST Vent-Saf explosion vent 44.5" x 44.5", Material 316, .5 min 1.00 max psig @ 72F. Check picture and email with any questions. This was never used or put into service, it is new in box/crate. Liquidating excess inventory, bargain price. For detailed info, go to: Informational link has been removed due to new policy, you will have to perform your own google search for product specifications and details Condition: Excellent, new. Please check calculator for insured shipping. Payment by Paypal, MO, Co Check. Thank you for bidding.. Please contact us for shipping options. If you are not satisfied with your transaction in any way, please contact us and let us know. Due to Ebay again changing sellers return policy timeframe from 14 days to 30 days, we have now discontinued returns. Please keep in mind if you have received a defective or damaged item, we are still happy to work with you to accept a return in a timely manner. Thank you for your consideration.