It also has an anti-airlock feature

Made of cast bronze with polycarbonate lid and stainless steel screen

shock-resistant and vibration-resistant

IPS Max Hull Thickness Strainer Color  3⁄4" 1-3⁄8" 3"Wx 4"L  White

120° beam angle

Perko - Locking Flush Hatch Pulls Chrome Brass, Part No. 077700199A Memorial It also has an anti-airlockThis is a high quality, heavy duty latching mechanism. It is made of chrome plated brass and stainless steel. Has an O ring seal on the shaft with a 5 16" Cam Bar (No. 0 99A) and easy grip T handle: 2 maximum hatch thickness. Size: 3 13 16" L x 3 W. Takes No. 8 fas teners. NOT included. Standard Package 5 Cam Bar Adjustment 1 1 4" 2" Description Spare Cam Bar 1 1 2"