It can also work with medium size standard metal mailbox with weight of less than 5 lbs and capacity of 800 cu in.
													
																	Spring loaded mailbox door. 
									
	
		
	
																	For 4x4 wooden posts. 
																	It works best with medium or large size standard plastic mailbox. 
																	3 w x 3 h x 2 d. 
																	1 5 8 x 7 3 4 steel spring loaded flap meets postal regulations by home style 22 88 22. 
															
													
									
	
		
	
																	Add the mailbox post spring by sno flex to your cart today. 
																	This device is designed for a single mailbox. 
																	Salsbury spring latch lock for aluminum mailbox door with 2 keys. 
																	In stock usually ships within 1 2 days. 
															
													
									
	
		
	
																	Brass plated mail letter slot fits all wood metal doors 3 x 10 inside opening. 
																	Spring latch lock for aluminum mailbox door with 2 keys. 
																	For use with early keystone series mailbox door versions manufactured prior to 2002. 
																	Spring style door hardware kit for gaines mailbox. 
															
													
									
	
		
	
																	Gaines keystone series mailbox spring style door hardware kit.