UPVC Door Run Up Block Riser, Clip in Fit - Set of 2 Replacement Plastic Door Closing Guides

Run-Up Block UPVC Riser Guide Closer Step in White - a pair of 2 versatile UPVC runner lift-up wedge-type blocks.
These blocks serve the dual purpose of elevating the opening sash into position as it closes within the outer frame, particularly useful when the opener is beginning to drop or shift downwards.
Crafted with a tapered wedge shape, these blocks facilitate smooth sash positioning, allowing the lock points to engage correctly, reducing undue stress on locking components and hardware. They ensure precise guidance of the opening vent sash into the outer frame for a secure closure.
Please note that while the UPVC block boasts a universal shape, some shaping may be required to ensure a firm and flat fit on the UPVC frame, with fastening via the screw port hole. If necessary, the block can be adjusted using a craft knife or sharp wood chisel. Sold as a pair of run-up blocks (2). Screws not included.

Your package will include: 2 x Run-up blocks.

Features:
Clip-fit design
Sturdy side walls will give additional strength - ideal for BS7590 security tests as they work as anti-lift devices 
Unique reverse ramp ensures windows open and close smoothly
Designed so as not to effect drainage