Gravity Grill 150mm White SKU: 177270 MODEL: DCT0066 Error. try again later You've successfully joined the club $ 25 .90 each Available on orders $50 to $1500. More info × Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants This gravity wall grill in a high quality white finish has draught reducing flaps. This is made from 100% recycled PVC. This is ideal for all types of 150mm ducted ventilation systems. This can be used with round or rectangular ducting. Features and benefits Prevents back draughts. Stops weather penetration.