DESCRIPTION	CODE
20mm x 16mm (br) x 16mm	IVHRT201616
20mm x 16mm (br) x 20mm	IVHRT2016
20mm x 20mm (br) x 16mm	IVHRT202016
25mm x 16mm (br) x 20mm	IVHRT251620
25mm x 20mm (br) x 16mm	IVHRT252016
25mm x 16mm (br) x 25mm	IVHRT2516
25mm x 20mm (br) x 25mm	IVHRT2520
25mm x 20mm (br) x 20mm	IVHRT252020
25mm x 25mm (br) x 20mm	IVHRT252520
32mm x 16mm (br) x 32mm	IVHRT3216
32mm x 25mm (br) x 32mm	IVHRT3225