Product Description:

A. Material: plastic POM, Zinc alloy, cold-rolled steel Q235, PA66, spring steel 65Mn

B. Finish: plated (brass + nickel + sealing), polish, heat treatment

Features:

A. Upward opening, free stop at any position you want,

B. Simply make a cross conversion, YS309 can be used both on upwards flap doors and downwards flap doors,
C. Adjustment according to the door weight is achieved to get a better function.

Advantages:

A. Make sure the product nonskid & stop steady by using the theory of auto clutch, free stop at any position you want.

B. Having a good stability, opening for a labor-saving, closing without noise. Adjustable support increases the service life.

C. YS309 passed 50,000 cycles durability test which is far beyond the CNS requirements of hinge 40,000 times.

Others (Packing and services):

a. Package: 25pcs/inner box, 100pcs/carton, N.W/G.W: 25kgs/25.65kgs 

b. MEAS: 32cm * 27.5cm * 23cm                              

c. Delivery Date: Normally in one month         

d. Samples Preparation: Samples can be sent in 3 working days (DHL 3-5days, UPS3-5days, Fedex/TNT 3-5days, EMS 7days reach destination)

Ps:

Difference between YS309, YS310, YS311 flay stay:

(1) different design

(2) Internal structure:

YS309 flap stay---friction clutch inside

YS310 flap stay---steel ball and cam construction inside

YS311 flap stay---wheel gear inside