MHC - 7400 Series

Double Seal Double Cover Recessed. Airtight Seals, Locked.

Application Recessed tray with secondary inner cover for added resistance against the egress of odours and to provide against drainage back pressure. All units are airtight and virtually watertight. Ideal for basements where back pressure water drainage is an issue.

Construction Comprises galvanised mild steel recessed cover and frame to enable concrete or floor finish infill. Solid steel base plate design prevents prior need for shuttering. Secondary inner cover for added resistance against the egress of odours and to provide against drainage back pressure. Keying in bars fitted inside recess. All trays manufactured locked with 4 galvanised steel screws as standard. When unlocked screw holes act as lifting eyes. All units are airtight and supplied double seal locked as standard.

Finish Hot dipped galvanised to BS EN ISO 1461 as standard.

Manufacture ISO9001 Quality system. F.A.C.T.A. (Fabricated Access Cover Trade Association) member.

Load Rating F.A.C.T.A. Class AAA - 10 Tonne G.L.V.W. (Gross Laden Vehicle Weight). Full loading achieved infilled with Grade C25 concrete.

Optional Extras

• Allen key head security screws = suffix /AK
• Ministry of Defence approved security screws = MHC suffix /MOD
• Brass Edging = suffix /BE
• Stainless Steel Edging = MHC suffix /SSE

Ordering Please state required MHC Order Code and any optional extras i.e. MHC-7425/BE = 600x600mm/with Brass Edge.

Any size made to order

MHC Order Ref	Clear Opening (mm)	Over Frame (mm)
MHC - 7422	300 x 300	410 x 410
MHC - 7423	450 x 450	560 x 560
MHC - 7424	600 x 450	710 x 560
MHC - 7425	600 x 600	710 x 710
MHC - 7426	750 x 450	860 x 560
MHC - 7427	750 x 600	860 x 710
MHC - 7428	750 x 750	860 x 860
MHC - 7429	900 x 450	1010 x 560
MHC - 7430	900 x 600	1010 x 710
MHC - 7431	900 x 750	1010 x 860
MHC - 7432	900 x 900	1010 x 1010
MHC - 7433	1000 x 1000	1110 x 1110

Frame Depth (mm)	Internal Tray Depth (mm)
80	45
80	45
80	45
80	45
100	45
100	45
100	45
100	45
100	45
100	45
100	45
100	45