Made of excellent quality engineer plastic by injection molding,higher

density and more firmly.

With UV resistant additive,air inlet has

stronger anti-aging ability,longer service

life,better sealing,flexible opening,with

anti-brid net.

 Dimension:front size  600*325*150mm,back size

550*260*160mm.

Double springs ensure excellent sealing.

 Guide wheel base adopt stainless steel

holder not rust.